Features:1. 9D surround sound, 5.0 dual-ear chip, large capacity, true wireless Bluetooth headset.2. Graphene bass diaphragm, HIFI high-frequency technology, 10MM dynamic speaker unit.3. Two connection methods: single / double free to use, single ear listening to enjoy alone, listening to HiFi stereo in both ears.4. Binaural HD call, 5.0 automatic boot pairing, CVC8.0 built-in active noise reduction IC.5. Functions: touch operation, binaural HD call, play pause, answer hang up, summon Siri, volume reduction, switch to the previous song, switch machine, automatic boot, automatic pairing, intelligent noise reduction, no delay in the game.Specification:Bluetooth version: V5.0Operation: TouchConnection method: single/double free to useAuto boot: supportAutomatic pairing: supportFunction: play pause, answer hang up, summon Siri, volume decrease, switch previous song, power on/off, auto power on, auto pairing, touch operation, binaural HD call, intelligent noise reductionApplicable: Smart mobile phone, tablet (Android / i0S).Packing List:1*Left earphone and right earphone1*charging cable2*ear cap (set)1*manual1*cartonTip: (Please charge before use) Charging method:1. Headphone charging: Put the earphone into the charging compartment and cover the cover. The earphone will automatically charge. When charging, the earphone will light red, and it will go out when it is full.2. Charge compartment charging: After connecting the data cable, the Led display prompts that it is charging, indicating that 100% is full.l.