Easy to install in helmet.
"Easy to install in helmet. Sounds clear while wearing riding ear plugs at 100km/h +. They are verry dificult to charge. must be turned on and verry picky on what charger. went throught 4 blocks a laptop couldint get a dead one to charge. got a second unit similar issues would recomend not buying. you basically need a dedicated charger just for them you have to carry around with you. Il try somthing on amazon once these fail."























































































