UGREEN CM667 User manual

Bluetooth Audio
Receiver/Transmitter
Model: CM667 I P/N: 35223
User Manual
Package Contents
1×Bluetooth Audio Receiver/Transmitter
1×USB-A to USB-C Cable
1× 3.5mm Audio Cable
1× 3.5mm to RCA Audio Cable
1× 3.5mm Audio Adapter
1 × User Manual
1 × Quick Start Guide
Specifications
The data are measured by UGREEN lab but may vary based on specific circumstances.
CM667
5.2
2400MHz-2483.5MHz
4 dBm (conducted)
10m/33ft (no blocking)
A2DP/AVRCP/HSP/HFP
RX: SBC/AAC
TX: SBC
20Hz-20kHz
≤630mV rms RL=100kΩ
≤0.75Vrms
≥92dB A-wt.
≤0.1%
-40±3dB (0dB=1V/Pa)
3.5mm audio
USB-C
Polymer Lithium-Ion Battery
300mAh 3.7V (1.11Wh)
5.25V
About 2 hours
TX: About 27 hours
RX: About 22 hours
Model
Bluetooth Version
Frequency Band
Max. RF Output Power
Transmission Distance
Bluetooth Profile
Frequency Response
Output Level (Receiving)
Input Level (Transmitting)
SNR
THD+N
Mic Sensitivity
Audio Port
Charging Port
Battery Type
Battery Capacity
Limited Charging Voltage
Charging Time
Codecs
Operating Time
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Product Overview
Single-click: Volume Up
(16-level Adjustable)
Press and Hold for 1s: Previous Track
Slide Switch
3.5mm Audio
TX RX
Indicator
Microphone
USB-C Charging Port
Transmitter Mode
TX RX
Receiver Mode
Button
Single-click: Reconnect,
Play/Pause Music, Answer/End A Call
Double-click: Force Pairing
Press and Hold for 3s:
Power On/Power Off/Reject A Call
Press and Hold for 10s:
Clear Paired Devices List
·
·
·
·
Indicator & Voice Prompts
Single-click: Volume Down
(Including Mute)
Press and Hold for 1s: Next Track
Function
Power
Bluetooth
connection
Audio
Battery
Status
Indicator Voice Prompts
(Only works on RX mode)
Power on
Pairing Pairing
Calling
/
/
Tone
Maximum/
Minimum
volume (Mute)
<0°C/32℉ or >
45°C/113℉
during charging
< -10°C/14℉ or >
60°C/140℉
when not in charging
Pairing successful Bluetooth connected
Disconnected
Playing music
Incoming call
notification
Bluetooth disconnected
Low battery Battery low
Power off
Power on
/
Start charging
Flashing blue
& red
Solid blue: 1s
Solid green
Solid blue:
3s
Flashing blue:
once every 5s
Solid blue:
lights on for
3s every 10s
Quickly
flashing
green
Flashing red:
once every 10s
Solid white: 1s
Solid red: 3s
Solid green: 3s
Quickly
flashing red:
5 times
Fully charged
Power off/Auto
power off when
battery is low
Power off
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EN
1. Connects to 1st Phone (Take An iPhone as An Example)
① Slide to "RX" mode, then press the button for 3s to turn on the product. It will automatically
enter pairing mode, and the indicator will flash red and blue alternately.
② Open up your iPhone's Bluetooth list and connect to "UGREEN-CM667". The blue indicator will
be on for 3s and the iPhone will show "connected" when pairing is successful.
③ Plug it into an audio output device (e.g. speaker) to play music.
2. Connects to 2nd Phone (or iPad)
① Complete the pairing with the 1st phone. Double-click the button, then the indicator will flash
red and blue alternately when it enters pairing mode.
② Connect to "UGREEN-CM667" in your 2nd phone's Bluetooth list. The blue indicator will be on
for 3s and the phone will show "connected" when pairing is successful.
Note
It only supports music playback on one device at a time. If you need to switch to the 2nd device for
playback, please turn off the audio source of the first device.
1. Connects to 1st Bluetooth Earphones (Take AirPods as An Example)
① Slide to "TX" mode, then press the button for 3s to turn on the product. It will automatically
enter pairing mode, and the indicator will flash red and blue alternately.
② Press and hold the button on the back of the AirPods charging case to put it into pairing mode.
The blue indicator will be on for 3s to indicate successful pairing.
③ Plug it into an audio source device (e.g. TV) to enjoy.
2. Connects to 2nd Bluetooth Earphone (or speakers)
① Complete the pairing with the 1st set of headphones based on the steps above. Then put the
2nd set of headphones into pairing mode based on its manual.
②Double-click the button, then the indicator will flash red and blue alternately when it enters
pairing mode. Pairing will be completed when the blue indicator turns on for 3s.
Wirelessly stream audio from your non-Bluetooth TV, Switch, or in-flight entertainment to your
Bluetooth earphones or speakers.
AirPods
TVs
Switch
Speakers
Headphones
Transmitter mode (TX)
In-flight
Entertainments
PCs
· After pairing is completed for the first time, it will automatically reconnect to the last paired device
the next time you use it.
· Double-clicking the button will put the product into pairing mode. However, if it has connected to 2
devices already, you need to disconnect one of them first and then double-click the button to
connect to the new device.
· This product can save a maximum of 5 paired devices. When connecting to the 6th Bluetooth device,
the first device in the memory list will be cleared automatically.
· The product will enter reconnecting mode when disconnecting from your device due to long
distance. If the reconnection is not completed in 5 minutes, the product will automatically turn off.
· The product will automatically turn on when connected to the power supply. During the charging,
the product will keep running and cannot be shut down.
· When the battery is low, the product indicator will flash red once every 10s, please charge it in time.
The red indicator will turn on for 3s when charging starts, and a green indicator for 3s when the
product is fully charged.
· The product protection mechanism will be triggered and the product will automatically turn off in
two situations:
① the battery temperature is less than 0°C/32℉ or greater than 45°C/113℉ during charging.
② the battery temperature is less than -10°C/14℉ or greater than 60°C/140℉ when not in charging.
Ⅲ. Tips
1. Clear paired devices list
After powering off, press and hold the button for 10s to clear the pairing information. The
red/green/blue indicator will turn on alternately to indicate successful clearing.
2. Resetting
After powering on, press and hold the button, then use the USB-C cable to connect the product
to a power supply. The product will automatically restart and complete the resetting.
Ⅳ. Clear Paired Devices List & Reset
· The product contains built-in polymer lithium-ion battery. Please do not dismantle, crush,
squeeze or expose it to fire.
· Stop using when the battery is submerged.
· Stop using when it is swollen.
· Do not expose the product to excessive temperature.
· Keep out of reach of children.
· If the battery has been accidentally swallowed or placed inside any part of the body, please seek
medical attention immediately.
Ⅴ. Warning
Amplifiers
Speakers
Receiver mode (RX)
Phones
Tablets Car Stereos
Wirelessly stream audio from your Bluetooth-enabled phones, tablets, or computers to your
non-Bluetooth stereo system (amplifiers, car stereos, etc.).
Ⅰ. Transmitter mode (TX)
Ⅱ. Receiver mode (RX)
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