Features: Dual hosts, left and right ear divided design both are convenient to your use. Smart touch control, compact and lightweight both well fit ear canal without burden. Life-level waterproof, well-withstanding sweat. Features 13mm dynamic driver for stereo sound. Type-C interface for quick charging comes with a long battery without the embarrassment of frequent charging. Ergonomic design and feather-light weight are both precisely designed and measured to make your ears fully comfortable. BT 5.0 technology, low latency, and low power consumption. Note: Except for manual connection for the first time, just open the lid when connecting again (On the premise that the phone has a headset pairing record). Please use the charging device below 5V-2.1A to charge the charging case. Do not use the fast charging equipment. The actual use may be slightly different depending on the specific situation. Please do not immerse the earphones directly into the water to avoid damage. Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same. Product Model: Lenovo LP40 Manipulation Model: Touch Control Bluetooth Version: BT 5.0 Communication distance: 10m ( without obstacles ) Compatible System: IOS / ANDROID / WINDOWS Battery Capacity ( mAh): Unilateral headphones *40mAh, rechargeable warehouse *300mAh Charging Port: Type-C Package Size / Weight: 11 - 10 - 5cm / 110g