1. Bluetooth 5.4 chip: JL AC7003 2. Battery capacity: charging case 400mAh, headset 70mAh 3. Use time: 7 hours 4. Size: 84*60*32mm; Total weight: 67g 5. OWS open-back headset, not worn in the ear 6. Support ANC+ENC noise reduction function, support master-slave switching, and summon Siri
