Cat Eye Tight Kinetic Taillight Cat Eye Tight Kinetic Taillight features a built-in acceleration sensor for Kinetic mode Which automatically turns on Hi for 2. 5 sec when bike deceleration is detected. Features Waterproof IPX-7 Operates even after 30 minutes of submersion in a depth of 1 meter5 Led with 360 degree visibility3 modes (rapid flashing and constant)Turns on in previous mode by Mode memory | Cateye | Tight Kinetic Taillight Black