Features: 1. Bluetooth-compatible 5.1 Chip: Effectively solve the headset and Android connection instability faster and more stable connection and more compatible. 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. HIFI Sound: With moving coil unit rich layers more surging and powerful bass bringing you pure and lossless sound quality so you can enjoy. 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: 5.1 Transmission Range: 10m Use Time: 8h Headset Capacity: 30mAh Charging Compartment Capacity: 160mAh Standby Time: 90 days includes: 1 * Earphone 1 * Charging Box