V. Pairing the headset with your mobile device
1. Turn on the headset.
2. Set your Bluetooth
device to "discover" the headset.
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3. Press and hold the multifunction button for 3 to 4 seconds to enter pairing mode.
The LED indicator blinks blue and red alternately.
4. Tap the newly discovered audio device ((KCH-905) displayed on your mobile
device, in the Bluetooth
list.
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5. If pairing is successful, the LED indicator blinks slowly once after it is connected.
6. We recommend turning off the device when not in use. The headset shuts off
automatically after a period of inactivity.
7. To delete a paired device from the headset memory, press and hold the
multifunction and volume - buttons for 5 seconds. The LED indicator glows
red and blue for 1 second.
VI. Pairing the headset with two devices
1. Follow the process mentioned above to pair the headset with the first device.
Then turn off the Bluetooth
function of the first device.
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2. The headset automatically enters into pairing mode. Turn on the Bluetooth
function of the second device to search devices.
3. Tap the newly discovered audio device (KCH-905) displayed on your second
device, in the Bluetooth
list.
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4. Turn on the Bluetooth
function of the first device, reconnect it to the headset.
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Now the headset is paired with both devices.
Note: Music can only be played from one device under two paired devices. If you
want to play music from another device, you need to pause or stop the audio
playback from the previous device. The same applies when talking during calls.
Precautions
• Do NOT drop, hit, or shake the device.
• Do NOT disassemble, repair, or modify the headset yourself.
Technical speci cations
Headphone
Type
Chipset
Form factor
Driver unit
Maximum power output
Frequency
Impedance
Sensitivity
Driver unit type
Microphone
Directionality
Directivity
Frequency
Impedance
Sensitivity
®
Volume control
Boom rotation
Connectivity
Connection type
Wireless RF frequency
Wireless range
Battery
Type
Charging time
Run time
Standby time
Charging type
KCH-905
Monoaural Bluetooth® compatible headset
CSR8615
On-ear
Φ28mm
20mW
20Hz〜20kHz
32±5
108dB±4dB (at 1kHz)
Moving coil type neodymium iron shed magnetic horn
Cardioid (noise reduction)
Omnidirectional
100Hz-20kHz
200K
34±4dB (at 1kHz)
Yes
Flexible - ± 270 degrees
Headset: Bluetooth® v5.0+EDR / Charging Base: USB-C
2.402-2.480GHz
Up to 10m
4
200mAh lithium polymer
Up to 2 hours
Up to 40 hours (50% volume)
1
110 hours
Magnetic charging base / USB Type C to charging base