Features: 1.Unilateral car phone headset: The wearing mode of the suspension, the hose angle can be adjusted at will, without affecting the listening effect. 2.High-fidelity sound quality: It can effectively reduce environmental noise and achieve high-definition call. 3.Seat headrest is fixed: close to the ear, no pain. 4.Touch the interactive experience operation: touch the power on, and slide up and down to adjust the volume. 5.2 hours fast charging: fast charging technology, saving 30% of charging time. specification: 1. Unilateral car phone headset: The wearing mode of the suspension, the hose angle can be adjusted at will, without affecting the listening effect. 2. High-fidelity sound quality: It can effectively reduce environmental noise and achieve high-definition call. 3. Seat headrest is fixed: close to the ear, no pain. 4. Touch the interactive experience operation: touch the power on, and slide up and down to adjust the volume. 5. 2 hours fast charging: fast charging technology, saving 30% of charging time. : Product color: black Material: ABS Speaker output power: 0.5W Battery capacity: 500mAh Working voltage: 3.7 Charging voltage: 5V Bluetooth link distance: about 10 meters Bluetooth: 4.1 Function: call function, support music Size: 4.5 * 2.8 * 51cm / 1.8 * 1.1 * 20.1in Weight: approx. 290g Package list: 1 * Bluetooth Earphone 1 * Data Cable 1 * Manual