Sahara Sailor Waterproof Bike Tail Light with 2 Laser 5 LED Flashing Lamp Bicycle Cycling Warning Alarm Rear LED 1. Waterproof bike tail light allows you to ride even in a rainy day; 2. 2 laser 5 LED 180 wide-angle flashing light keep you safe while riding in the dark; 3. Install it easily ! Just use your hands to fixate the light with the mount, no need extra installing tools; 4. Christal design, special diamond outer shape makes it elegant and luxury looking; 5. 9 flashing modes are switchable, just simply press the led button to switch. This red color one is with Starry sky flashing mode.