Features:
1.Bluetooth Function
2.TF Card Slot, Support MP3 Format
3.Built-In FM Radio
4.Compatible with Laptop/MP3/MP4 Player and External
5.Audio Devices with 3.5mm Stereo Jack input
6.Rechargeable Lithium Battery
7.Single Speakers
8.Built-In Microphone
9.Hands-Free Call Feature

Specifications:
1.Channels: 1 
2.Output Power: 3W*1
3.Driver: 1.5"*1
4.S/N: >80dB
5.Distortion: <1.0%
6.Frequency response: 100HZ-20KHZ
7.Bluetooth Version: V2.1 +EDR
8.Available range: 10 meters

Accessories:
1*User Manual
1*3.5mm Stereo audio line
1*Mini USB cable