1. International advanced wireless chip and circuit design techniques, support all wireless devices. 2. With FM function, can search radio station broadcast automatically. 3. With HiFi speaker, to make sure the clear and bright sound. 4. Support micro SD card and USB card, play MP3 format audio. 5. The wireless working distance is 10m. 6. With AUX in, can directly connect the outside devices, for example, tablet PCTVcell phones. 7. It will close automatically after 30 mins if disconnect wireless & torchlight not working. 8. A variety of flashing LED light with different colors, color lights flash follow the melody. 9. Wireless: V5.0 10. Support: L2CAPA2DPAVCTP, can receive audio signal and control the audio device, support HSPHFP(hands-free profile,with hands-free function) 11. SNR: >=90dB 12. Battery: 3.7V, 1200mAh 13. Normal volume playing time: 3 hours 14. Speaker power: 5Wx1 15. Frequency response: 120Hz-20KHz 16. Charging: 5V500mA 17. Charging time: 3-4 hours 18. Size: 86.7x86.7x127.2mm 19. Material: metal+silicone+PC