I7/I7s TWS Wireless Bluetooth Stereo Headset with Charge Box Earphone for iPhone Android Phones Specification: Wireless Version: V5.0 Support Agreement: A2DP1.3/HFP1.6/HSP1.2/AVRCP1.6/D11.3 Frequency: 2.4GHz Impedance: 32 OHM Transmission: class2 Output power: 30mW Range: 33feet Frequency response: 20-20000Hz Talking Time: 3-4 hours Charging time about 1 hour (power indicator charging: red light; full power: red light off ,blue light on) Standby Time: 120 hours Battery: 60mAh rechargeable Li battery Operating voltage range: 3.0V-4.2V Mitou sensitivity: -42dB Charging box size?55MM*28MM*60MM Earphone size?47 MM* 18.5MM * 8MM Charging power: DC5V power supply [round hole interface] (computer USB port, mobile phone charger, car charger) Compatible phone: compatible with almost all the Android, Apple, Microsoft, Saipan system with Bluetooth mobile phone 1 pair earphones with charging box packaging included: 2 x Bluetooth Headphones (left and right earphones) 1 x Charging box 1X headphone DC charging cable 1 x USB Charging Cable 1 x User Manual
