Bright LED Rear Tail Light for Bicycle, Outdoor. Light Weight. Wide Visible Angle. Waterproof. Ruby Red Colour. Tools Free Installation. Fit All Seat Post. Multiple usages. IMPROVE SAFETY - Your safety is our first PRIORITY - Super bright LED Tail Light, can be discover by far distance. Clear Ruby Red Body provide more than 240 degree of Visibility. Easier to be notice by drivers. Inclined upward design to keep the light stay horizontal while installed on the seat post. RELIABLE - The base is sturdiest aircraft quality Aluminium Alloy - LIGHT WEIGHT WATERPROOF - The O ring keep the interior dry, EVEN drop into water. Suitable for a rainy ride. EASY TO INSTALL - NO TOOLS needed. Stretch the silicon strap and hook together. High quality silicon strap tough enough to stretch many times. MULTIPLE USAGES - You can use it on your bike, helmet, backpack and even on your pets