Main Features:- IPX2 waterproof body, even keeping shining in the rainy days- Creative skull-shaped design, practical and eye-catching- Double switch buttons, independent to control normal patterned LED light and Laser LED light - 5 lighting modes: 3 patterned and 2 parallel laser lighting modes, short pressing switch button to change modes and turn on / off- Adjustable bracket, fit for 2.7 - 3.18cm diameter tubeParameter: Material: plasticLighting modes: normal LED light has long brightness, strobe, horse race lighting and Laser LED light has fast strobe, slow strobe, long brightnessLight: 8 LEDs, 6 normal LED lights and 2 Laser LED lights ( on the bottom )Battery: 2pcs AAA batteries ( not included )Power: 3mWWorking time: 9 - 36hBrightness: 150lmNote: we adopt highly safe laser light, but users still need to avoid being exposed directly to the laser light.     SpecificationGeneral Type: Tail Light                                                                          Placement: Saddle Tube                                                                          Suitable for: Electric Bicycle,Fixed Gear Bicycle,Mountain Bicycle,Road Bike                                                                          Features: Easy to Install,Superbright,Waterproof                                                    Basic Information Product weight: 0.0580 kg                                                                          Package weight: 0.1300 kg                                                                          Product Dimension: 12.00 x 7.30 x 3.50 cm / 4.72 x 2.87 x 1.38 inches                                                                          Package Dimension: 16.00 x 7.50 x 4.00 cm / 6.3 x 2.95 x 1.57 inches                                                    Package Package Contents: 1 x Bike Tail Laser Light, 1 x Bracket                                                                                                                       Product Safety Disclaimer: We do not accept any responsibility or liability for misuse of this or any other product.  All our products are extensively tested to comply with rigorous and strict QC standards.  For certain products (e.g. toys, knives, etc.), we recommend proper supervision as we cannot be held liable for misuse or accidents.