2 headsets from charging box They will connect each other automatically then only easily enter mobile phone Bluetooth setting to pair the earbuds.Bluetooth 5.0 with TWS technology on both bluetooth earbuds, provides faster pairing, stable connection and signal transmission (50ft no-obstacle range). Only need to take out two earbuds or any single earbud after you open Bluetooth function, they will open and connect automatically.The Press program adopts a special software, single-Press, double-Press to play/pause music, which effectively reduce Press by mistakes or inaccurate Press. Besides, it could increase or decrease the volume and go back or forward the etc. More convenient when music and making calls.Compatible with Bluetooth devices, including cellphones, tablets, laptops.5-hour playtime per charge and extends, you can charge the case via fast USB-C or wireless charger.Headphone battery: 50mAhCharging box battery: 500mAhMicrophone sensitivity: 42dbDrive sensitivity: 98db + -5dbEarphone working time: more than 5 hoursStandby time: 150 hourssize:13 x 17 x 17.5MMMaterial:ABScolour:Skin TonePackage Contents:2 x Mini Earphones1 x Portable Charging Bin1 x USB CableOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.