The TIGHT KINETIC rear light combines 360 degree visibility, 5 LEDs, and 3 operating modes with a powerful waterproof rating of IPX7 to provide cyclists with optimal safety on the road. The built-in acceleration sensor for "Brake Mode" increases rider safety by alerting those behind you when slowing down. The FlexTight SP-11 bracket and Snap System make for the perfect installation and removal. Long runtimes ensure a reliable and safe ride.