It is convenient for you to carry this watch style speaker when you doing some sports. It has six powerful features which will let your have more comfortable life. The soft leather material wil give you good feel. It connects to your iphone with bluetooth and you can answer the phone with this watch speaker. You can also  insrt TF card with some songs and listen to the music without bluetooth. The FM radio function will let you enjoy news and songs when doing some sports. Besides, users can use B20 watch speaker to control your phone remotely and take photos.The polymer battery supplies power and enable long standby time.

Specifications

Colors: While/black/red/gold/blue

Output power: 3w4R

Sensitivity ratio: 400mv 

SNR: 80db 

Charge power: DC5v

Frequency: 120HZ-20KHZ 

Bluetooth: bluetooth 2.1+EDR 

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