Bluetooth version: Bluetooth V5.3 Bluetooth main chip: AC8892EBattery: charging chamber capacity: 3.7 V 250mAh (printing code 250mAh), headset battery capacity: 3.7 V 40mA (button cell) Charging times of charging box for headset: about 3 timesLightning charging time: charging box for about 2 hours/earphone charging time: about 1.5 hoursTalk time: Talk time: approximately 6-7 hours (80% volume)/Music time: approximately 6-7 hours (80% volume) Actual test, shutdown standby time: 6 monthsBuilt-in prompt tone: NoneSize: 60.4mm * 45.3mm * 21.8mmWeight: 55g ± 1g (7.6g earphones+47.4g charging case)Function: Play/pause the previous song, answer the next song, hang up the phone, reject the call, language assistant, wireless charging, noise reduction, and transparent mode switchingAccessories: 1M USB-IP 1PCSProduct features:1.40mah button cell, super long endurance2. The chip adopts an upgraded version of the 8892E chip3. The microphone adopts international brand high performance to noise ratio silicon microphone4. Silicone microphone customized sound guide EVA cover5. Add neural ENC noise reduction algorithm6. Implement ANC active noise reduction and ENC call noise reduction7. Add lithium protection IC to the headphone boardNote: Relocation and renaming