7 modes: scan line by line, alternately left and right strobe, alternately top and bottom strobe, fast strobe, steady on, etc; Switch: light sensor switch, motion sensor switch; Endurance: 36 hours; Waterproof: IPX6; Light sensor: Automatically turns on when in the dim light, automatically turns off when in the intense light; Motion sensor: Automatically turns on when start to ride, automatically turns off after ending riding for 1 minute.