N3X Dual Core 5.4 Bluetooth Helmet Intercom Headset with Full Duplex Ipx6

N3X Dual Core 5.4 Bluetooth Helmet Intercom Headset with Full Duplex Ipx6. Dual BT5.4 bluetooth chips provide stable wireless signal transmission. Built in 1000mAh lithium polymer battery for durable power supply. Full duplex intercom works within 300 meter effective distance. Audio mixing function supports media and navigation sound during intercom. ENC and neural network noise reduction for clear call at high speed 120km h. Music sharing function available within 300 meter radius for group riding. Long 270 hours standby time meets long trip riding requirement. Up to 15 hours call time and 25 hours continuous music playback. Music sharing working time reaches about 12 hours within 300 meters. IPX6 waterproof grade and only 2.5 hours for full battery charging.