Product specifications:

50. Wireless: V5.3

Support: L2CAP/A2DP /AVRCP, can receive AUDIO signal and control the AUDIO device.

support HSP/HFP(Handsfree profile), Built-in Mic for hands-free phone call.

50. Working distance:10m
50. SNR:≥90db
50. Battery: 3.7V about 500mAh
50. Normal volume playing time: about 4h
50. Speaker driver: ¢45mm*1
50. Power: 4Ω/5W *1
50. Frequency response:120Hz-20KHz
50. Unit size: 85*49*133.4mm
50. Unit weight: about 244g
50. Charging:5V/500mA
50. Charging time: about 2h

1. International advanced wireless chip and circuit design techniques, support  wireless devices.
2. With FM function, can search radio station broadcast automatically
3. With Hi-Fi 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 10 meters.
6. It will close automatically if disconnect Wireless for 30 mins.
7. Support TWS.
8. A variety of flashing LED lights with different colors, color lights flash  follow the melody.