Description: 100 percent brand new and high quality Portable and durable, easy to carry, lightweight The tail light was built to improve the security of night riding and cycing entertainment. Two dual light lines on the road send by the laser indicator to keep a safe distance.This little laser beam tail light will ensure your safety while riding in the darkness. Laser design, energy saved, highlight led with flash mode,wide visibility design. 5 LED light is super bright. Meets IPX-II grade waterproof standard, tilt 15 degrees raindrops waterproof. Safer in water fog when riding in the rain. The Buckle is adjustable which suitable for diameter 20-31mm seat post. Great gift for your bicycle. Specifications: Type: Bicycle Rear Light Shell Material: ABS and Acrylic Light color: Red or Blue Power by: 2xAAA Batteries(not included) Flash Mode: 7pcs. Always bright, flash, slow flash, left to right, right to left and left to right slow flash, flash, flash back and forth LED Beam Quantity: 5pcs Size: 70 x 80 x 35mm Suitable for Mountain Road Bike Bicycle Package Included: 2 x Bicycle Tail Light Notes: please allow 1-5mm errors to the actual dimension due to manual measurement! Thank you ! Real color may slightly different from pictures due to computer screen's resolution, brightness, contrast etc. If you have any question, please contact us before leave negative feedback, we will try our best to serve you, thank you for your understanding! HOPE YOU HAVE A NICE SHOPPING!