Package includes: 1 x mount chin strapTELESIN Second Generation Motorcycle Helmet Chin Mount with mount for go pro fixed on it, completely new design in the market. Compatible with gopro hero 12, Hero 11, 11 Mini, Hero 10, Hero 9, Hero 8, Hero 7, Hero 5, Hero 4, Session, go pro max, DJI Action 3 4 , Insta360 X2 X3 go 2 go 3, and most of the action cameras.Flexible 180 degree adjustable make it widely compatible with most of the helmet, no matter normal riding circular ones or racing angular type one.The camera mount adapter can be adjusted upside down inverted, loose the screws at the silicone pad backside then adjust the mount direction.Or can just simply place the camera inverted, up to your camera size and your view demand, completely flexible.Note: There might be an error of 1-3 cm due to manual measurement, and slight color differences may occur as a result of varying lighting and monitor effects.