Fashion, portable sports music watch.this speaker owns excellent sound quality,with perfect audio design,fashion watch design, wearable and portable for outdoor sporting.</br>Build-in Micro, Handsfree calling function,bluetooth audio transmission. Selfie Remote Control Shutter, Cellphone Anti-lost, FM Radio Player.</br>Bluetooth Selfie when listening to music,TF card playing MP3/WAV format music; FM radio; prompt tone for any work status;inbuilt high-capacity li-ion battery for power supply, long standby time.</br>Anti-lost Function:speaker will be disconnected beyond efficient distrance in bluetooth status and prompt disconnected with alrm sound.And the sound can stop easily by manual touth any button.If paired phone reenters into efficient bluetooth distance, they reill reconnect automatically.</br>Compatible with all Bluetooth enabled devices like mobile phone,tablet,TV, good for outdoor sports and also useful at home.Wireless Speaker, with watchband and prepared hole for Ribband, very good for cycling, running and dancing.</br></br>Product Description</br></br><b>Features:<br> 1.this speaker owns excellent sound quality,with perfect audio design.<br> 2.Bluetooth audio transmission and handsfree call.<br> 3.Bluetooth selfie while listening to music<br> 4.FM Radio,Remote Control Selfie<br> 5.prompt tone for any work status<br> 6.TF card playing mp3/wav format music<br> 7.inbuilt high-capacity li-ion battery for power supply,long standby time</b> <br><br> Specifications:<br> 1. Ratio: 80db<br> 2. Weight: 68g<br> 3. Type: Active<br> 4. Battery:500mAh<br> 5. Output power: 3W<br> 6. Channels: 2 (2.0)<br> 7. Interface Type: USB<br> 8. Material: ABS, Plastic<br> 9. Speaker Type: Front<br> 10. Model Number: B20<br> 11. Bluetooth Version:3.0<br> 12. Distortion rate: < 1%<br> 13. Playback Function: Radio<br> 14. Working Range:about 10m<br> 15. Speaker Structure: Sealed<br> 16. Charging Time:about 2 hours<br> 17. Impedance: 600 or more ¦¸ manic<br> 18. Special Feature: Wireless,Portable<br> 19. Standby Time:extremely long 48-hour time<br> 20. Use: Home Theatre,Portable Audio Player<br> 21. Frequency response range: 120 hz ~ 20 KHZ<br> 22. Bluetooth parameters: Bluetooth V2.1 + EDR<br> 23. I/O: audio input: bluetooth + card/U disk / 3.5 mm audio input (AES/the EBU)<br><br> Package includes:<br> 1* Bluetooth Sports Music Watch<br> 1* Aux&USB Charging Cable<br> 1* User Guide<br></br><br/>http://www.amazon.com/gp/product/B019OTBRG8