[Ultra thin Helmet Bluetooth Headset]Headset thickness of only 0.3 inches,'t squeeze your ears, suitable for all helmets. The earphone speaker has a loud sound,and you can hear it when riding at high speed.The Bluetooth connection is stable and not be disconnected.It is suitable for all kinds of helmet types, adhesive isallation,clip installation, two in one soft and hard wheat.Two installation methods: soft microphone and hard microphone. [Perfect Sound Quality Play loud]To keep you connected while driving at high speeds, the X7 Helmet Bluetooth uses noise reduction technology for loud playback sound.Helmet Headphone noise cancelling technology,Loud volume,this helmet headset transfers clear.Compatible with all the smartphones with Can be used for Riding motorcycles,skiing, horseback riding,MP3,GPS are supportable independently. can still let the other party hear your voice clearly when driving at high speed. [800 milliampere high capacity battery ]Helmet Speakers Helmet supports 2 hours of fast charging, can play continuously for 40 hours, and has a standby time of 400 hours. [IP67 Waterproof]Structural waterproofing technology.Motorcycle Helmet Bluetooth Headset is provides deep Protection for internal parts,fearless of wind and rain, and smooth riding.Voice assistant.Wake up with one button ,travel navigation, make phone calls,and ride more easily and conveniently. Color: Black and Silver Material: plastic Package Contents: 1 x Motorcycle Helmet Speaker 2 x microphone Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.