1.Brand: Lenovo
2.Model: LP1
3.BT version: 5.0
4.Transmission distance: 10m (accessible)
5.Waterproof: IPX4
6.Working time: about 10 hours
7.Charging time: about 1.5 hours
8.Charging Case Battery: 300mAh
9.Earphone Battery: 55mAh
10.Color: Black, Grey, Red(Optional)
11.Horn diameter: 10mm
12.Frequency response range: 2020kHz