* 15pcs red LED * With strong magnet on the body * Waterproof ( IPX7) * Pressure Resistance * 9 Function: 1) Alternate 2)Blinking (fast) 3) Blinking (slow) 4)Rotate 5) S.O.S. Light 6) Steady on (strong) 7) Steady on (general) 8) 1pc Red LED on 9) 5pcs Red LED on Size: L11.5 x W10.5 x H3.5cm Battery: Use CR123A (included)