Safety Bicycle 2 Laser LED Back Tail Light For Night Cycling Product Features : - 100% new and high quality. - 5 LED to increase visibility - Fit for 20-26mm tube diameter - Laser launcher with Steady & Flashing mode. - 3 Flashing modes : Slow Strobe/Fast Strobe/Normal. - 7 kinds of flash mode: Always bright,flash,slow flash,left to right,right to left and left to right slow flash,flash back and forth - Waterproof, usable in water fog when riding in the rain. - Suitable for jogging, walking, cycling, car emergency, horse-riding, camping, etc. - This little laser beam tail light will ensure your safety while cycling during the night. - Creates a laser lane at the back of your bicycle to warn other road users of your presence especially at night. Product Specification : - Durability: 9-36 hours, depends on the batteries - Battery type: 2 x AAA batteries (not included) - Materials: ABS, acrylic and nylon - Colors: red and blue - Output Power: 1mW - Size: approx.8*7*3.5cm - LED light Color & laser type: Red & Cross lines/Blue & Cross lines/Colorful & Parallel lines/Red & Starry Sky lines. Trust is the basic of a fluent transaction . If you decide to buy from us, Please give us your trust & understanding as well. We will do our best to answer your question, send your item as soon as possible & help you. Believe In The Brand