Features:
1.Max sound out put:118±4dB
2.Sound gain:≥32dB±2dB
3.Total harmonic wave distortion:≤7%
4.Frequency range:300-3800MHz
5.Input Noise:≤32dB
6.Voltage:d.c.3.7V
7.Current:≤2mA
8. Full charging about 3 hours
9. Support Bluetooth function
10. Normal working about 45 hours, bluetooth working about 3 hours
Packing List:
1 PC or 1 Pair Hosts
2 x USB Charging cables
8 x Earbuds
1 x Brush
1 x English manual
1 x Shockproof case