Features& 65306; -BT version 5.0, stable connection, reduced latency, to protect the experience of riding a motorbike. -Two-person intercom system: through the X5's BT pairing, the intercom distance can reach 1000 meters, in the outdoor, you can communicate with your partner at a distance. -CVC and DSP multiple intelligent noise reduction, effectively shielding background noise and wind noise. -IPX67 level waterproof, no fear of rain, brave to go forward. -Remaining power broadcast, so you can be more clear about the product. Built-in 1000mAh high-capacity battery, the maximum use time of intercom time up to 20H. Specification& 65306; Product name: Riding helmet BT headset Product size: 90*50*25mm BT version:5.0 Product material:ABS+TPU Battery:3.7V/1000mAh Charging time: 2.5H Working time:20H-45H (MAX) Waterproof level:IPX67 BT distance:30M Intercom distance: 1000M (MAX) Music sharing distance:50M Package list& 65306; 1*Headset 1*Manual 1*Charging cable 1*Microphone