Features:_x000D_1. Bluetooth-compatible 5.3 Chip: Effectively solve the headset and Android connection instability faster and more stable connection and more compatible._x000D_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._x000D_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._x000D_4. HIFI Sound: With moving coil unit rich layers more surging and powerful bass bringing you pure and lossless sound quality so you can enjoy._x000D_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:_x000D_Bluetooth-compatible Version: 5.3_x000D_Transmission Distance: 15m_x000D_Speaker Unit: 10mm_x000D_Speaker Impedance: 16ohm_x000D_Horn Frequency Response: 20Hz-20KHz_x000D_includes: 1 pair of * Earphone_x000D_1 * Charging Box_x000D_1 * Charging Line_x000D_1 * Manual_x000D_