New design hot-selling TF card bluetooth speaker with microphone

1.bluetooth:Using CSR bluetooth chip V3.1,meets V2.0, V1.2 and V1.1 standard, support   A2DPAVRCP, hands-free agreement

2.resistance :4Ω

3.theory distance:10m

4.speaker size: diameter 45mm

5.frequency response:280Hz-16KHz

6.battery capacity:520mAh

7.charge time: about 2 hours

8.accessories:instruction book, audio cable

9.maximum power: 3W