C1 TWS-Wireless Headset Bluetooth 5.0 Sport Headset Portable Charging Box Headset Features: This true wireless Bluetooth earphones feature Bluetooth 5.0 chip, automatic boot pairing, built-in active noise reduction IC, HD call and large capacity lasting battery life. Two Connection Methods: / double to use, ear listening to enjoy alone, listening to HiFi stereo in both ears. Smart Touc-h Operation: Automatic power on/off / reject / last song / song / call . It ensures 5.0 Bluetooth game without delay, and the cabin can be used as a mobile phone bracket and mobile phone emergency power supply for multi-function use. Headphones support fingerprint smart , reject push button Precautions: 1: Do drop, scratch, or pour water on the Bluetooth headset. 2: When using Bluetooth headsets, stay away from magnets, electrical appliances and speakers. 3: Do put the Bluetooth headset in temperatures (working environment and working temperature range -10-55 degrees Celsius) 4: If the Bluetooth headset is suitable for a long, charge it fully. 5: Charge the battery once a week to extend the life of the Bluetooth headset. 6：Size：5.6x4.5CM Warn: 1: Use Bluetooth headset, do heat. 2: Do arbitrarily disassemble the battery of the earphone component and put it into the fire. 3: Store in a dry or ventilated environment. Package Included: 1 pair of headphones, 1 charging compartment,