1、Bluetooth 5.0, lossless transmission, faster speed. 2、Popup window pairing, open the charging box to pair and connect. 3、Intelligent noise reduction, clear call between two ears, stereo dual channel. 4、Easy experience without button touching technology, sound assistant calling function, powerful power reserve, long standby time of 80 hours. 5、Support wireless charging function, compatible for IOS/for Android system. Condition: 100% brand new Item type: Wireless Bluetooth Headset Material: ABS Weight: Approx. 195g Bluetooth version: V5.0 Communication range: ≤10m/32.8ft (standard environment) Frequency response: 20Hz-20KHz Sensitivity: 103dB SPL +/- 3 dB Distortion rate: ≤5% Support agreement: for HSP/ for HFP/for A2DP/for AVRCP/ Impedance: 16Ω Power: 5mw Charging compartment battery capacity: 400mAh Headphone battery capacity: 45mAh Music time: about 3h (volume 80%) Talk time: about 3.5H Standby time: about 80h Charging box USB charging: about 1h Charging box wireless charging: about 3h Headphone button control: touching control 1 x Charging compartment 2 x Earphone 1 x Protection case (a set) 1 x Hook 1 x Charging cable 1 x Instruction