Product Name: 2020 Newest I7s Tws 5.0 Wireless Casque Audio Bluetooth Earpiece Noise Cancelling Headphone Bluetooth Headset Model NO.: i7s Distance version: Class A Specifications: HSP Color: White Characteristics: Power Display Function: Bluetooth Soundtrack: Dual Track Bluetooth Version: 4.0 Usage: Mobile Phone, Call Center, Computer Style: In-ear Trademark: Ail Transport Package: Carton Box Specification: 8*8*8cm Origin: China Product Description 2020 newest i7s tws 5.0 wireless casque audio bluetooth earpiece noise cancelling headphone bluetooth headsetProduct details:Model NOi7sIC chipJ L Battery Capacity40 MAHbase Battery Capacity400 MAHBluetooth VersionBluetooth V5.0Bluetooth ProtocolHFP1.6/HSP,A2DP,A VRCP,GAIAFrequency Range2.4026GHz-2.480GHzOperating rangeup to 10 metresMP3 Playing Time4-5 HoursCharging Time≤2 hoursCharge Voltage3.7V-5VInput Vlitage5VProduct picture:More question,welcome send a inquiry~