This is a patented product and best quality.There are some copies on the market， please check carefully the photos to see the difference.Features:-The world's smallest Bluetooth speakers.-Including multi functions: not only Bluetooth music and hands free talk on call， it is also a smart anti-lost， your phone locators and a Bluetooth shutter for phone camera.-Easy taking， it is the smallest Bluetooth speakers， smaller than tennis， you can easily carry a mobile phone ornaments. -Easily portable， follow any of your phone into the pocket of freedom.-Not only Bluetooth speakers， but also as the perfect mobile phone ornaments. -Crisp and clear sound quality， allowing you to listen to music， call carefree mood. -Long standby time， so feel free to share your good mood. Specification: 1. Bluetooth V2.1， EDR Bluetooth compatible version 2. Rated power: PO = 2W 3. Frequency response: 180HZ-16KHZ 4. Distortion: THD <1% 5. SNR: S/N> =90DB 6. Resolution: >=55dB 7. Speaker: 23mm; 4 European 2W 8. Product Dimensions: 26.8 * 26.8 * 28.5mm 9. Weight: 26g (bare metal weight) 10. Battery: 3.7V/180mAh 11. FM: No 12. USB Interface: Micro5pin USB interfaces; 13. USB charging port to use only 14. Headphone jack: None 15. Without TF card music playback 16. TF deck: not supported 17. Bluetooth indicator blue lights indicate the working status;red light indicates charging status 18. Color: Blue， Yellow， Green， White， RedPackage includes:1. Retail package (as photo)2. User manual (English)3. Headset jack gadget.