BH128 Bluetooth 5.0 Wireless Headphones Bone Conduction Earphones with Mic

BH128 Bluetooth 5.0 Wireless Headphones Bone Conduction Earphones Outdoor Sport Headset with Mic
Specifications:
Color: black/ white
Bluetooth chip: QCC3003
Speaker type: 1 watt bone conduction horn
Battery: 120 mAh polymer battery
Mic: anti-interference microphone, -36db
User time: 4 hours of use (standard volume)
Standby time: 15 days
Effective range: 20 meters
Mono/stereo: stereo
Bluetooth version: EDR / (QCC3003) 5.0
Weight: 35.5g
Bluetooth Class (I/II): II
BQB included(Y/N): No
Bluetooth Profile: A2DP/HFP, HSP, AVRCP, GAVDP, AVDTP
Receive sensitivity: 84±3dB
Impedance: 10 Ω ± 15% (AT 800 HZ)
Frequency range: Fo-20KHz
FM: No
Charging using the USB interface: for 1.5 hours
TF card: No
System language: English tips

Indicator status
Red light flashes quickly: low battery warning
Steady red light: charging
Blue light is always on: fully charged
Blue and red alternately flash: BT match
Blu-ray double slow flash: no match, maybe the device is powered off, or the distance between the two is more than 20m. The blue light flashes slowly: match/dial/play audio.

Basic operation
Operation     control      prompt tone
Answer the call Click the multi-function button once
End the call Click the multi-function button once
Reject the call, press and hold the multi-function button for one second.
Call long press the multi-function button for one second
Switch songs:  Press and hold the volume button "+" "-" once
Volume control: Click the volume button "+" "-" to make the volume smaller and larger
Play/pause phone music Press Multi-Function
Open and press the Power button for 3 seconds. Prompt/powe on
Close Press and hold the Power button for 3 seconds. Prompt/powe off
Bluetooth disconnected
Bluetooth connection
Clear the match. Turn off the power and press the Power button for 6 seconds.
Low battery

Notes:
1. There may be slight size deviations due to manual measurement, different measuring methods and tools. 
2. The picture may not reflect the actual color of the item because of different photographing light, angle and display monitor.

Package Content:

1 x Pair of Earphones
1 x USB Cable
1 x User Manual