DuraMOBI Hummingbird Black Technology Bone Conduction Wireless Speaker Portable Small Audio(Silver)

1. Bone conduction black technology two-channel real stereo sound2. Long battery life built-in FM HD calling HD sound quality3. Lightweight and small body easy to carry4. High sensitivity microphone diamond knife pattern splitting process5. The principle of bone conduction through high-frequency and low-density vibration the ear bones make a pleasant sound6. Dual channel 2 bone conduction transducers7. Built-in Bluetooth 5.0 FM enhanced IC TWS wireless stereo8. Signal to noise ratio: greater than or equal to 70db9. Shell material: metal10. Power supply mode: USB charging / built-in lithium battery11. Waterproof grade: IPX 212. Audio decoding: support MP3 / AC3 / AAC / WAV and many other13. Battery capacity: 400mAh14. Frequency response range: 20Hz-20KHz15. Interface type: USB16. Function: music call17. Charging time: 1 hour18. Playing time: 6 hours19. Standby time: 240 hours20. Input current: 0.4A21. Output power: 3W22. Input voltage: 5V23. Dimensions: 40 x 25mm24. Weight: