7.
LED indicator
1) When the headset is charging
LED indicator
Status of the headset
Red LED is on
Charging in progress
Red LED is off
Finish charging
2) When the headset connected to a Bluetooth device
LED indicator
Status of the headset
LED flashes red and blue alternately
Pairing mode
Blue LED flashes once every 3
seconds
Not connected to a
Bluetooth device
Blue LED flashes twice every 5
seconds
Connected to a HFP device
or A2DP device)
Blue LED flashes 3 times every 5
seconds
Simultaneously connected
to a HFP device and A2DP
device
Blue LED flashes twice or 3 times
every 5 seconds
Calling
Blue LED flashes twice every 4
seconds
Incoming ring
Blue LED flashes once every 5
seconds
During a call
Red LED flashes twice every 20
seconds
Low power
10
8.
Indication tone
Indication tone
Status of PC-2175237
Two short “DU” tones
Enter pairing mode
Emits 2 tones every 5 seconds
During a call (Microphone
mute)
