[4PCS BRIGHT LED LIGHTS], each LED light includes 5pcs SMD LED on the PCBA board, bright; 3 different colors for different purposes, 1pc red and 1pc green for 2 sides of boat bow and 1pc white for boat stern, 1pc extra white for backup; 3 lighting Modes [Steady, Flash, and Strobe] [WEATHER-RESISTANT], IPX5 weather-resistant case, so its suitable for outdoor use, it is widely used for different boats, pontoon, kayak, bike, dog collar, stroller, runner, etc [Warning: it couldn be soaked in water] [A PRACTICAL SCREW DRIVER], with this tool, you could easily change the LED lights battery; the screwdriver is precisely machined with magnetized tips for easy holding fasteners to start screwing and also prevent fasteners from dropping after unscrewing; WITHOUT THIS TOOL, your LED light will be useless when the battery runs out [EASY INSTALLATION], the LED lights back is with a clip, which could easily attach to a flat belt; With these extra elastic straps, you can easily fix the lights around poles or tubes, on a bike for night cycling, on your arm or leg for night running, etc., 7 inch length strap: 3pcs, 12.3 inch length strap: 1pc Colour:Red+green+grey Material:PC+plastic Size:5.5 x 3 x 1.8cm Package Contents: 4 x lights 4 x Buckle straps 4 x screwdrivers Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.