Output Power: 2.5W

Response Frequency: 150Hz-20KHz

SNR: ≧76dB

Speaker: 4Ω 3W

Function: FM,USB,TF,Bluetooth

Music Format: MP3

Power: DC 5V 500mA

Battery: Li-ion 1000mA

Working Time: 4-6H

Color: Black/yellow/blue/green/orange（optional）