Dual hosts for left and right-ear-divided designs both are convenient for your use. Smart touch control, compact and lightweight fit well ear canals without burden. Life-level waterproof, well-withstanding sweat. 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 comfortable. Bluetooth 5.0 technology, low latency, and low power consumption. Note: Except for manual connection for the first time, 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 and do not use the fast charging equipment. 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