Feature: 100% brand new and high quality. Quantity: 1 Material: ABS Input Power: 100mW Battery: 2 * AAA batterie Working Time: 9-36 hours Seat Post: 20-36mm / 0.79-1.42in Item Size: 87 * 80 * 55mm / 3.43 * 3.15 * 2.17in(L * W * H) Fits for most type of bikes. Beautiful decorations and provide more safety as rear signal lighting in the evening riding. 5 superbright red LED indicators and 2 laser lamps, they work independently. The LED indicators have 7 flashing modes: Always bright, fast flash, slow flash, scroll up, scroll down, scroll up fast, flash up and down. Laser lamps have 2 flashing modes: Always bright, double flash. with good water-resistant property and long lifespan, very durable. TypeBicycle Tail Light Easy to install. Does not include battery Package Content: 1X Bicycle Laser Tail Light (NO Retail Box. Packed Safely in Bubble Bag)