bluetooth headphone with led light for many people with TF card and FM functions LED Bluetooth Headset

Specifications:

1: Bluetooth 4.0 wireless transmission protocol 2: Transmission distance and range(10m, 360°)
3: High SNR Bluetooth audio connection
4: No wire,no transmitter,no software,no setup, it is easy and fast.
5: Automatic Switch-over between calls and music
6: Hidden omni-directional Mircrophone
7: Low power indicater
8: Adjustable headband
9: Working duration:6-8h,charging duration:3h
10: Headset Spec.: frequency response:20-20KHz,SRN:92dB,working Voltage:3.7V,current:30mA speaker size:Φ30mm
11: Microphone Spec.:100Hz~10kHz&SRN≥74dB&Sensitivity:-66dB