wholesale wireless bluetooth wireless stereo sport neackband headphone

Alibaba wholesale wireless bluetooth wireless stereo sport neackband headphone   

Features:

widely used in bluetooth devices, such as mobile phones, game consoles, laptops, PDA, etc., stereo music for voice communications or appreciation.
Main functions: make a phone call, listen to music to cable, voice prompt
Bluetooth version: CSR8645 chip version 4.1
5 GHz working frequency: 2400 ~ 2400
Receiving sensitivity: < - 83 dBm
Transmission power: automatically detects the dynamic transmission power, the maximum 4 dBm
Support A2DP function (stereo music function)
Support AVRCP function (audio/video remote control function)
Support function of HFP (hands-free function)
Support HSP function (headphones mode)
Support APTX audio lossless transmission function
Communication: double C
Channel bandwidth: 1 m
Indoor barrier-free range: > 8 m (omnidirectional)
Outdoor barrier-free range: > 10 m (omnidirectional)
Frequency response: 20 hz to 20 KHZ
The battery specification: 3.7 V, 70 ma lithium battery
The whole machine working current: < 30 ma
The machine shutdown standby current: < 1.5 uA
The machine on standby current: < 15 ma
Horn maximum drive power: 20 mw * 2 high-fidelity green white magnetic horn
Life time: 3 hours or more
Online standby time: 15 hours or more
Charging current: 100 + / - 15 ma
Battery charging and discharging life: 500 times or more