Protocol

QCY uses BLE GATT for device control. Please refer to the GATT service UUID list.

Source: Reverse-engineered from QCY earphone BLE traffic analysis.

Connection

QCY earphones expose three Bluetooth MAC addresses: Control, Left, and Right.

In most cases you can see either side and the control MAC address.

The control MAC address is broadcast after connecting to either side and receiving the L2CAP Disconnect command.

However, it also works if you just connect to the device and then disconnect (not ideal, but a workaround when no direct L2CAP disconnect API is available).

Device Discovery

QCY devices are discovered via BLE scanning by filtering on manufacturer data CompanyID 0x521c.

The scan does not filter by service UUID or device name — only by manufacturer data.

Scan Filter

Set a BLE scan filter for manufacturer data with CompanyID 0x521c (QCY). A secondary CompanyID 0x05D6 exists for QCY watches but can be ignored for earphones.

Manufacturer Data Format

When a scan result contains manufacturer data for CompanyID 0x521c with at least 20 bytes, the following fields can be parsed:

Byte Offset	Field	Encoding
0–1	vendorId	Big-endian 16-bit: `data[0] << 8
3	colorIndex	`(data[3] & 0x18) >> 1`
5	leftBattery	Bits 0–6: battery % (0–100). Bit 7: 1 = charging
6	rightBattery	Bits 0–6: battery % (0–100). Bit 7: 1 = charging
7	boxBattery	Bits 0–6: battery % (0–100). Bit 7: 1 = charging
11–16	controlMAC	Classic Bluetooth MAC for control connections (scrambled order)
18–23	otherMAC	Other earbud MAC address (scrambled order)

MAC Address Byte Order

MAC addresses in the manufacturer data use a scrambled byte order, not sequential:

MAC Field	Byte Indices (within manufacturer data)	Format String Order
controlMAC	11, 12, 13, 14, 15, 16	`[12]:[11]:[13]:[16]:[15]:[14]`
otherMAC	18, 19, 20, 21, 22, 23	`[19]:[18]:[20]:[23]:[22]:[21]`

If otherMAC resolves to 00:00:00:00:00:00, it should be treated as identical to controlMAC.

Three MAC Addresses

MAC	Source	Purpose
bleMac	BLE scan result address	The advertising BLE address
controlMAC	Manufacturer data [11–16]	Classic BT MAC for GATT connection
otherMAC	Manufacturer data [18–23]	The other earbud's MAC

24 bytes of manufacturer data are required for full MAC parsing. With only 20 bytes, battery and vendorId are still available.

Model Identification

QCY earphones do not report their model name or supported features via BLE characteristics. Model identification is achieved by mapping the vendorId (from manufacturer data bytes 0–1) to a product database.

Product Database

The Quicky library includes an embedded product database (199 products) fetched from the official QCY server API. Each product entry contains:

vendorId — Unique 16-bit identifier broadcast in manufacturer data
title — Model name (e.g., "QCY HT16 MeloBuds")
subTitle — Full model designation (e.g., "QCY-HT16")
features — Supported capabilities:
- ANC — Noise cancellation modes (if supported)
- EQ — Equalizer bands and presets
- Key function — Customizable touch controls
- Channel balance — Left/right audio balance adjustment
- Find earphone — Location tracking
- Device name — Renaming support
- Auto-off timer — Scheduled power-off

Usage

scanner := quicky.NewScanner()
scanner.Scan(func(result quicky.ScanResult) {
    if product, ok := result.GetProductInfo(); ok {
        fmt.Printf("Model: %s\n", product.Title)
        if product.Features.ANC != nil {
            fmt.Printf("  ANC modes: %d\n", len(product.Features.ANC.Modes))
        }
        if product.Features.EQ != nil {
            fmt.Printf("  EQ: %d bands\n", product.Features.EQ.Bands)
        }
    }
})

Server API (for updates)

The product database can be updated using the Python script in scripts/dump_products.py:

python3 scripts/dump_products.py --output-dir scripts/output

This fetches the latest product list from https://api.watch.qcy.com/product/findProductList and control panel definitions for each model.

Packet Format

All commands sent via the main command characteristic (00001001) and all responses received via the notification characteristic (00001002) share the same framing:

[0xFF] [body_len] [cmd1] [param_len1] [params1...] [cmd2] [param_len2] [params2...] ...

Offset	Size	Description
0	1 byte	Start of Frame: `0xFF` (signed: `-1`)
1	1 byte	Body length: total packet length minus 2
2+	varies	One or more command blocks (see below)

Each command block within the body:

Offset	Size	Description
0	1 byte	Command ID
1	1 byte	Parameter count (number of parameter bytes)
2+	N bytes	Parameter data

Multiple commands can be packed into a single packet. The parser iterates through the body using param_len to find the next command block.

Exceptions

The following are written directly to their own characteristics (no 0xFF framing):

Data	Characteristic UUID	Format
EQ settings	`0000000B`	Raw EQ bytes (see EQ)
Key functions	`0000000D`	Raw key-function pairs (see Key Functions)

Command List

Commands are sent to 00001001-0000-1000-8000-00805f9b34fb. Responses/notifications arrive on 00001002-0000-1000-8000-00805f9b34fb.

Overview

Cmd	Name	Param Len	Description
0x01	Reset Default	0	Reset settings to default
0x02	Clear Pairing	0	Clear Bluetooth pairing info
0x03	Factory Reset	0	Full factory reset
0x04	Music Control	1	Play/pause/prev/next
0x05	Light Flash	1	LED flash on/off
0x06	In-Ear Detection	1	Enable/disable in-ear detection
0x07	Noise Value	1	Set/read noise value
0x08	Volume	3	Set left/right volume
0x09	Low Latency	1	Game mode on/off
0x0A	Monitoring	1	Monitoring/sidetone value
0x0C	Noise Cancel Mode	1	ANC/transparency/off mode
0x0D	Test Mode	1	Enable/disable test mode
0x10	Sleep Mode	1	Enable/disable sleep mode
0x11	Ear Tip Fit Test	2	Start/stop ear tip fit test
0x12	LED Mode	1	LED indicator on/off
0x14	Power Manager	4	Auto power-off timer
0x16	Sound Balance	1	Left/right balance
0x17	ANC Setting	3	ANC scene/level/noise setting
0x18	Rename Device	varies	Set device name (UTF-8)
0x19	Voice Language	varies	Set voice prompt language
0x1D	Tone Volume	1	Set notification tone volume
0x1E	Take Photo	1	Remote shutter trigger
0x1F	Standby	1	Enter standby mode
0x20	EQ Params (v1)	varies	Read EQ parameters (6 bytes/band)
0x22	EQ Params (v2)	varies	Read EQ parameters (7 bytes/band)
0x23	LDAC	1	LDAC codec toggle
0x27	Adaptive EQ	1	Adaptive EQ toggle
0x28	ANC Result	varies	ANC calibration result
0x29	ANC Wear	1-2	ANC wearing state
0x2B	Key Function	varies	Button action mapping
0x2C	Wearing Detection	3-4	Wearing detection settings
0x2D	Spatial Audio	1	Spatial audio toggle
0x2E	Music Mode	1	Music playback mode
0x2F	Battery	3	Battery levels (L/R/case)
0x30	Version	3 or 6	Firmware version
0x32	Env Adaptation	1	Environmental adaptation
0x34	TWS Enable	1	TWS mode toggle
0x35	LED Switch	1	LED switch
0x36	LED Effect	varies	LED color/effect settings
0x37	Play Mode	1	Playback mode
0x39	Focus Mode	1	Focus mode toggle
0x3A	Music Status	6	Current music playback status
0x3B	Music Info	varies	Music file list
0x3D	Tone Play	1	Play a notification tone
0x3E	Sync Time	7	Synchronize date/time
0x3F	Alarm	7	Alarm clock management
0x43	AI	1	AI assistant trigger
0x44	Max EQ Count	1	Query max custom EQ slots
0x45	Custom EQ Test	1	Custom EQ test mode
0x46	EQ Left	varies	Left channel EQ (v2 format)
0x47	EQ Right	varies	Right channel EQ (v2 format)
0x48	In-Ear Sensitivity	1	In-ear detection sensitivity
0x4A	Game Config	1	Game mode configuration
0xFE	Request Data	1	Request current value of any cmd

Command Details

0x01 — Reset Default

Send: [0x01, 0x00]

Resets all settings to factory defaults (without clearing pairing).

0x02 — Clear Pairing

Send: [0x02, 0x00]

Clears Bluetooth pairing information.

0x03 — Factory Reset

Send: [0x03, 0x00]

Full factory reset (clears pairing + resets all settings).

0x04 — Music Control

Send: [0x04, 0x01, action]

Action	Description
0x01	Play
0x02	Pause
0x03	Previous
0x04	Next

0x05 — Light Flash

Send: [0x05, 0x01, state]

State	Description
0x00	Off
0x01	On (flashing)

0x06 — In-Ear Detection

Send: [0x06, 0x01, state]

State	Description
0x01	Enable
0x02	Disable

Response: [0x06, 0x01, state] — 0x01 = enabled, other = disabled.

0x07 — Noise Value

Send: [0x07, 0x01, value]
Read: [0x07, 0x01, 0xFF]

Sets or reads the noise cancellation depth value (0–254). Sending 0xFF requests the current value.

Response: [0x07, 0x01, value] — current noise value.

0x08 — Volume

Send: [0x08, 0x03, left, right, 0x00]

Sets left and right volume independently. Third byte is reserved (always 0x00).

Response: [0x08, 0x03, leftVoice, rightVoice, maxVoice] — current volumes and max volume (all unsigned).

0x09 — Low Latency (Game Mode)

Send: [0x09, 0x01, state]

State	Description
0x01	Enable
0x02	Disable

Response: [0x09, 0x01, state] — 0x01 = enabled, other = disabled.

0x0C — Noise Cancel Mode

Simple mode (value <= 0xFF):

Send: [0x0C, 0x01, mode]

For advanced ANC scenes (value > 0xFF), the app unpacks the value and sends command 0x17 instead. See ANC Setting.

Mode	Description
0x00	Off
0x01	ANC
0x02	Outdoor
0x03	Transparency

Response: [0x0C, 0x01, mode] — current mode.

0x0D — Test Mode

Send: [0x0D, 0x01, state]

State	Description
0x01	Enable
0x02	Disable

Response: [0x0D, 0x01, value]

0x10 — Sleep Mode

Send: [0x10, 0x01, state]

State	Description
0x01	Enable
0x02	Disable

Response: [0x10, 0x01, state]

0x11 — Ear Tip Fit Test (Compactness)

Send: [0x11, 0x02, left, right]

Value	Description
0x01	Start test
0x02	Stop test

Response: [0x11, 0x03, status, leftResult, rightResult]

status = 0x00: Ready/testing
status = 0x02: Result available
leftResult/rightResult: fit test scores

0x12 — LED Mode

Send: [0x12, 0x01, state]

State	Description
0x01	Enable
0x02	Disable

Response: [0x12, 0x01, state]

0x14 — Power Manager (Auto Power-Off)

Send: [0x14, 0x04, timeLo, timeHi, 0x00, 0x00]

timeLo, timeHi: 16-bit little-endian auto power-off time (in minutes)
Last 2 bytes reserved (0x00)

Response: [0x14, 0x04, powerTimeLo, powerTimeHi, curTimeLo, curTimeHi]

Power-off time and current elapsed time, both 16-bit LE.

0x16 — Sound Balance

Send: [0x16, 0x01, value]

Value	Description
0x00	Full left
0x32	Center (default)
0x64	Full right

Response: [0x16, 0x01, value]

0x17 — ANC Setting

Send: [0x17, 0x03, mode, subScene, noiseValue]

mode: ANC mode (see noise cancel mode table)
subScene: Sub-scene/level within the mode
noiseValue: Noise depth value

The app uses a packed integer format for the combined noise mode:

packed = (mode << 16) | (subScene << 8) | noiseValue

When mode=3, subScene=1, noiseValue=0, the app remaps to mode=3, subScene=2, noiseValue=0 (transparency special case).

ANC Scene Table

Mode	SubScene	Description
0x00	0x00	Off
0x02	0x01	Silent Environment ANC (Level 1)
0x02	0x02	Silent Environment ANC (Level 2)
0x02	0x03	Silent Environment ANC (Level 3)
0x03	0x01	Working Environment ANC (Level 1)
0x03	0x02	Working Environment ANC (Level 2)
0x03	0x03	Working Environment ANC (Level 3)
0x04	0x01	Noisy Environment ANC (Level 1)
0x04	0x02	Noisy Environment ANC (Level 2)
0x04	0x03	Noisy Environment ANC (Level 3)
0x0A	0x01–07	Transparency Mode (Levels 1–7)

Response: [0x17, 0x03, mode, subScene, noiseValue]

0x18 — Rename Device

Send: [0x18, strLen, UTF-8 bytes...]

Response: [0x18, strLen, UTF-8 bytes..., 0x00] — NUL-terminated name string.

0x19 — Voice Language

Send: [0x19, strLen, UTF-8 bytes...]

Sets the voice prompt language (e.g., "en", "zh").

0x1D — Tone Volume

Send: [0x1D, 0x01, volume]

Response: [0x1D, 0x01, toneVoice] or [0x1D, 0x02, toneVoice, maxVolume]

Default maxVolume is 100 if only 1 byte returned.

0x1E — Take Photo

Send: [0x1E, 0x01, action]

Remote camera shutter trigger.

0x1F — Standby

Send: [0x1F, 0x01, state]

Enter/exit standby mode.

0x20 — EQ Parameters (v1 Read)

Response: [0x20, paramLen, eqType, masterGainLo, masterGainHi, {freqLo, freqHi, gainLo, gainHi, qLo, qHi} x N]

eqType: EQ preset index
masterGain: 16-bit LE signed, divide by 100 for dB
Per band (6 bytes each):
- freq: 16-bit LE frequency in Hz
- gain: 16-bit LE signed, divide by 100 for dB (clamped to +/-12.7 dB)
- q: 16-bit LE, divide by 100 for Q factor

0x22 — EQ Parameters (v2 Read)

Response: [0x22, paramLen, eqType, masterGainLo, masterGainHi, {freqLo, freqHi, gainLo, gainHi, qLo, qHi, bandType} x N]

Same as v1 but with an extra bandType byte per band (7 bytes per band).

0x23 — LDAC

Send: [0x23, 0x01, state]

Toggle LDAC high-quality codec.

0x27 — Adaptive EQ

Send: [0x27, 0x01, state]

Toggle adaptive EQ.

0x28 — ANC Result

Response: [0x28, paramLen, ...]

ANC calibration result data.

0x29 — ANC Wear

Response: [0x29, 0x01, value]

If only 1 byte of params, the value is duplicated internally to 2 identical values.

0x2B — Key Function

Response: [0x2B, paramLen, keyId1, funId1, keyId2, funId2, ...]

Button action mapping as key-value pairs. See Key Functions for ID tables.

0x2C — Wearing Detection

Send: [0x2C, 0x03, enable, musicIndex, ancIndex]
Send: [0x2C, 0x03, enable, musicIndex, ancIndex, toneEnable]  (v2, 4th byte appended)

enable: 0x01 = on, 0x02 = off
musicIndex: Action when removed (e.g., pause music)
ancIndex: Action when removed (e.g., change ANC mode)
toneEnable (v2): Tone notification toggle

Response: [0x2C, 0x03, isEnable, musicIndex, ancIndex] or [0x2C, 0x04, isEnable, musicIndex, ancIndex, toneEnable]

0x2D — Spatial Audio

Send: [0x2D, 0x01, state]

Toggle spatial audio / head tracking.

0x2E — Music Mode

Send: [0x2E, 0x01, mode]

0x2F — Battery

Response: [0x2F, 0x03, left, right, box]

Each byte encodes:

Bit 7 (0x80): Charging flag (1 = charging)
Bits 0-6 (0x7F): Battery level (0-127, maps to percentage)

Type	Index
Left	0
Right	1
Case	2

0x30 — Version

Response (3 bytes): [0x30, 0x03, major, minor, patch]
Response (6 bytes): [0x30, 0x06, Lmajor, Lminor, Lpatch, Rmajor, Rminor, Rpatch]

Formatted as "major.minor.patch". 6-byte variant includes separate left and right firmware versions.

0x32 — Environmental Adaptation

Send: [0x32, 0x01, state]

0x34 — TWS Enable

Send: [0x34, 0x01, state]

0x35 — LED Switch

Send: [0x35, 0x01, state]

0x36 — LED Effect

Send: [0x36, paramLen, speed, brightness, effectIndex, R1, G1, B1, R2, G2, B2, ...]

paramLen: 3 + (3 x numColors)
speed: Animation speed
brightness: LED brightness
effectIndex: Effect pattern index
Colors: RGB triplets (3 bytes each)

Response: Same format.

0x37 — Play Mode

Send: [0x37, 0x01, mode]

0x39 — Focus Mode

Send: [0x39, 0x01, state]

0x3A — Music Status

Send: [0x3A, 0x06, musicID_b0, musicID_b1, musicID_b2, musicID_b3, isPlaying, playMode]

musicID: 32-bit little-endian music ID
isPlaying: 0x01 = playing, 0x00 = paused
playMode: Playback mode byte

Response: Same format.

0x3B — Music Info

Send: [0x3B, paramLen, startToneID, {musicID_b0, b1, b2, b3, totalLo, totalHi} x N]

startToneID: Starting tone index (byte at offset 2)
Per file (6 bytes):
- musicID: 32-bit LE music file ID
- total: 16-bit LE total count/duration

Response: Same format. paramLen = 1 + (6 x N).

0x3D — Tone Play

Send: [0x3D, 0x01, toneID]

Play a specific notification tone by ID.

0x3E — Sync Time

Send: [0x3E, 0x07, year, month, day, hour, minute, second, dayOfWeekBitmask]

year: Year mod 100 (e.g., 25 for 2025)
month: 1-12
day: 1-31
hour: 0-23 (24-hour)
minute: 0-59
second: 0-59
dayOfWeekBitmask: 1 << (calendar_day_of_week - 1) where Sunday=1

0x3F — Alarm

Add:    [0x3F, 0x07, 0x01, alarmID, enable, hour, minute, cycle, 0x05]
Delete: [0x3F, 0x07, 0x02, alarmID, 0x00,   0x00, 0x00,   0x00, 0x00]
Edit:   [0x3F, 0x07, 0x03, alarmID, enable, hour, minute, cycle, index]

alarmID: Unique alarm identifier
enable: 0x01 = enabled, 0x00 = disabled
hour/minute: Alarm time
cycle: Day-of-week bitmask (bit 0 = Sunday, bit 6 = Saturday)
Byte at index 2 is the operation type: 1=add, 2=delete, 3=edit

Response: [0x3F, paramLen, count, {alarmID, enable, hour, minute, cycle, ?} x N]

Stride of 6 bytes per alarm, parsed from offset 1.

0x43 — AI

Send: [0x43, 0x01, action]

AI assistant trigger.

0x44 — Max EQ Count

Response: [0x44, 0x01, count]

Maximum number of custom EQ presets supported.

0x45 — Custom EQ Test

Send: [0x45, 0x01, state]

0x46 — EQ Left Channel

Send: [0x46, paramLen, eqIndex, masterGainLo, masterGainHi, {freqLo,freqHi,gainLo,gainHi,qLo,qHi,bandType} x N]

Same as v2 EQ format but for left channel only. Written via 00001001 with 0xFF framing.

0x47 — EQ Right Channel

Send: [0x47, paramLen, eqIndex, masterGainLo, masterGainHi, {freqLo,freqHi,gainLo,gainHi,qLo,qHi,bandType} x N]

Same as v2 EQ format but for right channel only.

0x48 — In-Ear Sensitivity

Send: [0x48, 0x01, level]

0x4A — Game Config

Send: [0x4A, 0x01, config]

0xFE — Request Data

Send: [0xFE, 0x01, cmdId]

Request the current value/setting for any command ID. The device responds with the corresponding command's response format.

EQ Settings

EQ data is written directly to characteristic 0000000B-0000-1000-8000-00805f9b34fb without the 0xFF packet framing.

Simple EQ (via characteristic)

Write to 0000000B: [eqType, data...]

Parametric EQ Write (v1, cmd 0x20)

Write to 00001001 (with 0xFF framing):
[0x20, paramLen, eqIndex, masterGainLo, masterGainHi, {freqLo, freqHi, gainLo, gainHi, qLo, qHi} x N]

paramLen = N x 6 + 3
masterGain = float x 100, 16-bit LE signed
gain = float x 100, 16-bit LE signed, clamped to [-1270, 1270] (+/-12.7 dB)
q = float x 100, 16-bit LE
freq: raw Hz, 16-bit LE

Parametric EQ Write (v2, cmd 0x22)

Write to 00001001 (with 0xFF framing):
[0x22, paramLen, eqIndex, masterGainLo, masterGainHi, {freqLo, freqHi, gainLo, gainHi, qLo, qHi, bandType} x N]

paramLen = N x 7 + 3
Same encoding as v1 with an extra bandType byte per band

Per-Channel EQ (cmd 0x46/0x47)

Uses v2 format but with command IDs 0x46 (left) and 0x47 (right).

Key Functions

Key function data is read from and written to characteristic 0000000D-0000-1000-8000-00805f9b34fb without the 0xFF packet framing.

Format

[keyId1, funId1, keyId2, funId2, ...]

Key-value pairs, 2 bytes each.

Key IDs

Music Mode (Normal)

Key ID	Description
0x01	Left single tap
0x02	Right single tap
0x03	Left double tap
0x04	Right double tap
0x05	Left triple tap
0x06	Right triple tap
0x07	Left quad tap
0x08	Right quad tap
0x09	Left long press
0x0A	Right long press

Voice/Call Mode

Key ID	Description
0x15	Left single tap
0x16	Right single tap
0x17	Left double tap
0x18	Right double tap
0x19	Left triple tap
0x1A	Right triple tap
0x1B	Left quad tap
0x1C	Right quad tap
0x1D	Left long press
0x1E	Right long press

Function IDs

Fun ID	Description
0x00	None / Disabled
0x01	Play / Pause
0x02	Previous track
0x03	Next track
0x04	Voice assistant
0x05	Volume up
0x06	Volume down
0x07	Game mode toggle
0x08	Answer call
0x09	Reject call
0x0A	Hold call
0x0B	Redial

Noise Cancel Mode (Legacy)

For command 0x0C with simple single-byte values (models without ANC setting support):

Mode	Description
0x00	Off
0x01	ANC
0x02	Outdoor
0x03	Transparency

For models with ANC setting support, the app uses command 0x17 with a packed integer:

packed = (mode << 16) | (subScene << 8) | noiseValue

See ANC Setting for the scene table.

Battery Read

Battery can be read from characteristic 00000008-0000-1000-8000-00805f9b34fb or via command 0x2F notification.

Format: 3 bytes [left, right, box]

Each byte:

Bit 7 (0x80): 1 = charging, 0 = not charging
Bits 0-6 (0x7F): Battery level (0-127)

Version Read

Version can be read from characteristic 00000007-0000-1000-8000-00805f9b34fb or via command 0x30 notification.

3 bytes: [major, minor, patch] -> "major.minor.patch" (left earbud only)

6 bytes: [Lmajor, Lminor, Lpatch, Rmajor, Rminor, Rpatch] -> separate left + right versions

Response Parsing

The device sends notifications on 00001002. The data is parsed by stripping the [0xFF, bodyLen] header and iterating through command blocks.

Default Response Types

Param Count	Handling
1 byte	Parsed as a single value (SingleDataBean)
N bytes	Parsed as hex string (CmdHexDataBean)

Commands with specific parsers use their respective DataBean classes as documented in each command section above.

Protocol Variants

The QCY app supports multiple chipset vendors with different protocol paths:

Vendor	Protocol Path	Notes
QCY	`QCYHeadsetClient` via `00001001`/`00001002`	Main protocol documented above
JL/Jieli	`JLDeviceImpl` via JL SDK	Jieli-specific BLE commands
Airoha	RACE/MMI commands, `AirohaPEQManager`	Airoha-specific ANC and EQ handling
ZR	Via UUID `0000000E`	ZR device settings characteristic

This documentation covers the QCY standard protocol (used by most QCY earphones like HT07, T13, etc.).

V1 Protocol (Legacy Characteristics)

Older models may use individual characteristics instead of the unified command channel:

Characteristic UUID	V1 Purpose	Cmd ID (internal)
`00000001`	Left single tap key	-
`00000002`	Right single tap key	-
`00000003`	Left double tap key	-
`00000004`	Right double tap key	-
`00000005`	Left triple tap key	-
`00000006`	Right triple tap key	-
`00000007`	Version read	0x1004
`00000008`	Battery read	0x1001
`00000009`	Language read	-
`0000000A`	Reset	0x1005
`0000000B`	EQ read/write	0x1003 / 0x1013
`0000000C`	Send time	-
`0000000D`	Key function V2	-
`0000000E`	ZR device settings	-
`0000000F`	In-ear check (JL)	-

Chinese Term Reference

Terms found in the protocol implementation:

Chinese	Pinyin	English
入耳检测	ruer	In-ear detection
低延时	diyanshi	Low latency / Game mode
监听	jianting	Monitoring / Transparency mode
降噪	noise	Noise cancellation / ANC
佩戴	peidai	Wearing detection
声道平衡	-	Channel balance
闪灯	light	LED flash
配对	pair	Bluetooth pairing

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