Features:

Bluetooth Function
TF Card Slot, Support MP3 Format
Compatible with Laptop/MP3/MP4 Player and External
Audio Devices with 3.5mm Stereo Jack input
Built-In Microphone
Hands-Free Call Feature

Specifications:
Bluetooth Version: 2.1+EDR
Output Power: 3W*1
S/N: >65dB
Distortion: <1.0%
Frequency response: 100HZ-20KHz
Available range: 10 meters
Material: ABS plastic
Weight approx 285g
Size:72mm*72mm*72mm