Product Name: Gt1 Tws Fingerprint Touch Bluetooth Earphones Noise Cancelling HD Stereo Wireless Headphones Model NO.: GT1 Distance version: Class A Specifications: HSP Color: Black Characteristics: Support Music Function: Bluetooth Soundtrack: Dual Track Bluetooth Version: V5.0 Usage: Mobile Phone, Call Center, MP3 & MP4, Computer, Game Player, Aviation, DJ Style: In-ear Use: Portable Media Player, Mobile Phone, Computer, Ect Operation Range: about 10 Meters Bluetooth Standard: V5.0 Charging Case Battery: 300mAh Earphone Battery Capacity: 43mAh Music Time: about 15 Hours Charging Time(Earbuds/Case): about 1hours for Earbuds/2hour for Case Total Battery Life(with Case): about 12 Hours Sensitivity: 110