Key Features Bluetooth 5.4; Chip: Jieli AC7003 Battery capacity: 300mAh for charging case, 35mAh for earphones; Usage time: 7 hours Dimensions: 63x53x28mm; Total weight: 49.5g Supports ANC ENC noise reduction, one-to-two, master-slave switching, up and down song switching, calling Siri, etc. Warrenty Period 6 months official brand warrenty
