Bicycle Rear Tail Light, Outdoor Nation Waterproof Bicycle Rear Tail Light Lamp with 2 Laser Beams and 5 LED TWO HIGHLY VISIBLE RED LASERS provide lane markers on road. This newly-designed Laser tail light can emit two parallel lines, to form a virtual lane together with the moving of bicycle on the road. LED flash light and two lines not only enhance the warning effect strongly and greatly but also improve the safety of night riding. Light provides side and rear visibility. Visibility at almost 1 mile. 5 Very bright Red LED, 3 flashing modes. Be seen clearly in darkness/low light: 3 LED modes-fast/slow flashing, steady 2 Laser-flashing, steady. 6 Combination Modes = lasers 2 modes (steady and flashing) x 5 LEDs 3 modes (steady, flashing, or random), 5 LED rear tail signal lights and 2 high quality visible red lasers beams, Light Color: Red Multi-use from cruisers, BMX to baby strollers, joggers, walkers, roadside emergencies, camping. Weather and shock proof design. Shock and Waterproof-level of outer skin meets IPX2 standard- for reliable normal daily outdoor use No wobble secure attachment stays fixed to seat post with easy snap on and off to remove light. Simple installation and removal. Easy to mount: clips to seat post, rear side strut, or your clothing; each light includes ultra-compact, sturdy, weatherproof case. Get easily spotted by the others at night. Compact design can be mounted to your seat post or clipped to your waistband Size: 8.2cm x 4.8cm x 4.5cm (approx.), Fits for most type of bikes, Polycarbonate cover with a universal attachment bracket. Suitable for installation in the seat tube diameter of around 2.5 cm.