Please notice: The front seat and the rear seat can communicate between two riders, And the connection distance between the two devices is 300M. Features: - Intercom Function Support 2 riders, or front and rear seat intercom, distance 300 meters. - Precise operation Support the voice assistant function, which can help you achieve more precise operation, wake up the mobile phone voice assistant, and voice control reduces errors and is more convenient. -Easy to use This product adopts a physical pressure button design to ensure that you can clearly perceive the button operation while wearing gloves to prevent misuse. -Waterproof Using a well-designed waterproof technology, the waterproof level of this headset has reached IPX6 without fear of wind and rain. -Smart connection You can connect two devices at the same time, choose freely, switch devices with one button to listen to songs, navigate, and answer calls Intercom function: 1. Power on two devices, short press the M key, and switch into intercom mode audio tip "intercom mode", after that, long press the M key of either device, audio tip "paired" suggesting two devices connected and ready to talk. Note: Two devices were paired before, then skip the long press M key process, it will automatically pair with each other. For the connection between the two devices specifically please refer to the manual, different styles of connection may have a little different places, hope to understand! Specification: Model: Y10 Intercom Distance: 300M Product Type: Helmet Bluetooth headset Weight: 60g (bare) Product size: 85mm x 35mm Battery capacity: 1000mAh Standby time: 18 months Charging time: about 20 minutes or so Playback time: about 32H Talking time: 30H continuous talk Waterproof rating: IPX6 level Bluetooth version: Bluetooth 5.3 Transmission distance: 20m (no obstacles) Package includes: Bluetooth headset x 1 or 2 set Host Velcro x 3 or 6 pairs Spare microphone cap x 1 or 2 Hairy speaker velcro x 2 or 4 Headset charging cable x 1 or 2 Instruction manual x 1 or 2 Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.