Features:
* Support Bluetooth/Line in Audio connection, FM radio, TF card, Hards-free calling
* Voice guidance
* Built-in mic
* Built-in Battery  400mah
* 4 Keys operation
 1).Last song/turn down volume when press long
 2).Next song/turn up volume when press long
 3).Make a call in phone,press button to switch the call to speaker.

Specifications
Net Weight: 210g
Voltage: DC 5V
Dimension: 108 * 36 * 54 mm
Bluetooth Version: 3.0 + EDR
Working Distance: up to 10m
Loudspeaker:33mm  4Ω3W
S/N Ratio: >= 85db

Frequency: 90Hz - 20KHz
size:6.5*3.5*8cm

Built-in Battery
Li-ion Battery: BL-5C
Voltage: 3.7V
Current: 400mAh
Power: 3Wh
Battery Carge Time: 2-3hrs

Package listing:
1 * Mini Wireless Bluetooth Speaker
1 * User manual