Metal mini bluetooth speaker car speaker FM radio TF card in wholesale

1.Intelligent voice reminding
2.Support near field fast matching.   
3.built in rechargeable 400mah lithium battery.
4.Hands-free call function.
5.Support TF card and FM radio.
6.Support Aux line-in.                          

7.Build in Microphone  

Specifications:

Bluetooth 3.0
Material :Aluminium                       Size: 71.2*42.5mm
Bulit-in Microphone

Battery capacity :400mAh
Frequency range: 150Hz-20KHz
Working range : 10m
Power rating :3W
Power supply : USB 3.7V
AUX input: 3.5mm
Working time:2.5hrs