1. Transmission function, ultra-low power consumption, suitable for all Bluetooth devices. 2. Automatic answer function, can switch to manual answer function. 3. Safe and fast; built-in high-quality anti-interference microphone, high-fidelity sound quality. 4. Can effectively achieve hands-free answering and hanging up calls. 5. Easy to operate, with functions such as previous track or play music, volume adjustment, play/pause, automatic callback, etc. 6. Product: Helmet Bluetooth headset. 7. Standard configuration: Hard microphone. 8. Model: LX2. 9. Applicable helmets: Full helmets/half helmets/others. 10. Bluetooth version: 5.0. 11. Speaker unit: 4mm * 2. 12. Charging interface: TYPE-C. 13. Charging time: 2 hours. 14. Waterproof rating: IP67. 15. Battery capacity: 1200 mAh. 16. Continuous talk time to music playback time: More than 20 hours. 17. Standby time: 360 hours. 18. The intercom function has no noise reduction ability at a speed of 100 yards per hour. 19. Installation method: Clip + buckle. 20. Automatic/manual answer switching: Double-click the plus sign. 21. Voice assistant: Supported. 22. Chinese and English voice switching: Supported. 23. Function of connecting two mobile phones: Supported. 24. Color: Black. 25. Material: ABS. 26. Dimensions: 7.8 x 4 x 2.35 cm. 27. Package contents: - 1 Bluetooth device. - 1 hard-wired microphone. - 1 data cable. - 4 speaker buckles. - 1 English and Chinese instruction manual. 28. Only includes the above package contents and no other products. 29. Note: Light reflection and different displays may cause slight differences between the color of the item and the actual object. The measurement tolerance is +/- 1 - 3 cm.