Specification:

• Supports MP3/WMA/WAV file formats
• Compatible with mobile phones, PC and multimedia devices
• Rechargeable lithium battery: supports 20 hours playback time
• Special function: phone handsfree
• Bluetooth 3.0 + EDR
• Distance: 10m
• Solution: Broadcom (without TF card function) 
• Battery: 2,200mAh Li-polymer battery, 20 hours music time
• Colors available: black and green
• Multifunctional:
  • Bluetooth stereo speaker
  • Power LED flashlight
  • USB Power bank
  • Bluetooth speaker phone