Specifications

(1) Can play music by link to mobile phone,MP3,MP4,PC,IPOD and other audio devices, if you devices have 3.5mm socket. 
(2) Suitable for Promotion, Gift, Store for sell. Pocket size to carry anywhere 
(3) Charging Indicator   
(4) Bluetooth connect to PC/Mobile/IPOD and so on    
(5) Microphone function 

Technical parameter
Power supplier: DC5V 
Output power: 3W(1KHz,THD10%)
Frequency: 200Hz——20KHz
Signal&noise ratio ≥80dB
Impedance: 4 OHM(Ω)
Li-ion Output: 3.7V~4.2V+0.05V  
Li-ion Input: 5V
Lithium battery capacity: 600mAh
Speaker Unit: 45mm
Case Material: ABS
Dimensions: Dia70mm*H50mm(closed resonation)
Weight: 90g
Color: White/Black