Hi-fi & hands free talking
Input power :Mini USB 5V/lithium battery (400mA/3.7V)
Output:RMS 3W*1 THD=10%
Frequency:100Hz-20KHz
Signal&Noise ratio≥75dB
Loud Speaker:1.5 inches; 4Ω
Style:Waterproof design
Lithium Battery:400mAh
Service Time:4 hours for playing music, 6 hours for calling
Range:About 10m