E-Bro&reg; Bicycle Cycling Laser LED Tail Light Mountain Bike Back Safety Warning Alarm Rear Light Laser Lane laser parallel lines Waterproof.If you are still worried about how to protect your tail light in the rain, you can enjoy your bike-riding with this Bicycle Safety Taillight even in a raining day. Super convenient and easy to use,the light is small enough to fit into a pocket or small bag if you need to take it with you. Use for jogging, walking, bicycles, car emergency, horse-riding, road emergency & camping, ETC. It comes with easy to use mount for easy installation (no tools required) and 7 blinking modes for different situations. This little laser beam tail light will ensure your safety while riding in the darkness. It has 5 LEDs and 2 laser bulbs.