Product Name: Original I7 Tws Bluetooth Earphone Stereo Airpods for iPhone and Andriod Phone Model NO.: Original i7S TWS Bluetooth Earphone Distance version: 12m Specifications: Hsp, Hfp, A2dp, Avrcp Color: White, Black, Red, Gold, Pink Characteristics: Support Music Function: Bluetooth Soundtrack: Dual Track Bluetooth Version: V4.2+EDR Usage: Mobile Phone, Call Center, MP3 & MP4, Computer, Game Player, Aviation, DJ Style: In-ear Speaker Impedance: 32? Microphones Sensitivity: 42dB Frequency: 2.40GHz Battery Capacity: 65mAh/950mAh Input: DC5V Playing Time: 3-4hours Charging Time: 1-2hours Standby Time: 100hours Working Temperature: -10-55