Product Description Bluetooth 5.4 chip: JL AC7003 Battery capacity: charging case 400 mAh, headset 70 mAh Usage time: 7 hours Dimensions: 84 × 60 × 32 mm Total weight: 67 g OWS open-back earpiece, not worn in the ear Supports ANC ENC noise reduction function Supports master-slave switching Supports Siri voice assistant
