[DETAIL] Battery properties: Rechargeable battery Rechargeable battery: Lithium battery - polymer Material: Plastic Headset function: Sports and exercise Wireless properties: Includes Bluetooth function Product charging port: type-c port charging Whether coordinated fast charging is supported: No Includes a charger: No Maximum rated power: 5W Minimum rated power: 1W Power supply: USB charging Operating voltage: 36V and below [ATTRIBUTES] - Hign-concerned Chemical: None - Material: Metal - Category: Earphones & Headphones - Hign-concerned Chemical: None - Material: Metal - Category: Earphones & Headphones - Volume Control: Yes - Vocalism Principle: Bone Conduction - Wireless Type: Bluetooth - Communication: WireLess - Style: In-ear - Origin: Mainland China - Brand Name: BERTALANFFY