Hoco W51 Wireless Bluetooth Headphones

1. Bt Version: V5.3. Chip: Ac7006F4. 2. Supported Protocols: A2Dp, Avrcp, Hsp, Hfp. 3. Transmission Distance: 10M. 4. Transmission Frequency: 2.4Ghz. 5. Speaker Unit: 40Mm. 6. Impedance: 32Ω ± 15%. 7. Frequency Response: 20-20000Hz. 8. Sensitivity: 98Db ± 3Db. 9. Battery Capacity: 400Mah. 10. Charging Input: Dc5V, Type-C. 11. Charging Time: 2 Hours. 12. Talk / Music Time: 46 Hours (80% Volume). Standby Time: 180 Hours. 13. Lightweight, Soft Earmuffs, Rotatable Earcups, Adjustable Headband. 14. Supports Songs Switching, Songs Play / Pause, Volume Adjustment. 15. Supports Bt, Tf Card, Aux Playback Modes. 16. With Microphone. 17. Accessories: Type-C Charging Cable × 1, Aux Cable × 1. 18. Sizes: 208 × 195 × 77Mm. 19. Weight: 262G.