1 sound output:118±4dB
2 gain: ≥32dB±2dB
3 harmonic wave distortion: ≤7%
4 range:300-3800MHz
five Noise:≤32dB
6:d
7:≤2mA
eight Full charging about three hours
9 Normal working about forty five hours
List:
1 x Host
1 x USB cable
five x Earplugs
1 x Brush
1 x English manual
1 x Shockproof field
Features: