Features: 1. Comfortable to Wear: Not into the ear design with a rotatable headset can be adjusted at will no vibration even if the long time to wear will not swell pain. 2. Long-lasting Battery Life: The charging compartment combines charging and storage and intelligent display of power the headphones can continue to listen to songs all day when fully charged. 3.Intelligent Noise Reduction: Even when you are in a noisy environment this headset allows you to talk clearly as if you were communicating face-to-face without being affected by noise. 4. Applicable Scenes: Suitable for safe driving Express delivery rider delivery office work and listen to music. 5. After-service: If you have any questions after receiving the product please feel free to contact us and we will provide you with a satisfactory answer. Specification: Bluetooth-compatible Version: V5.3 Battery: 90MAH Charging Time: One hour Talking Time: 10 hours Listening Time: 12 hours Transmission Distance: 10 meters Voltage: 3.7V Frequency: 20Hz-20KHz Impedance: 32 Sensitivity: 85dB/mW Waterproof rating: IPX 5 includes: 1 * Earphone 1 * Charging Line 1 * Manual "