[Safety lights] Did you know that 80% of cycling accidents occur during the day Bicycle tail lights not only make you visible at night, but also during the day, the wide-angle visual design provides more visibility than any other lights on the market. Always protect the safety of you and your loved ones.[USB Bicycle Tail Light]No more waste of batteries. All you have to do is to connect the included USB cable to your computer or any device with a USB port to charge this bicycle tail light. It only takes 1.5 hours to fully charge, red light when charging, and yellow light when fully charged.[Four-light mode selection] One-key switch bicycle seat taillights, according to your preferences, four different lighting modes, including pure full brightness, red light, blue light and red-blue fast flashing. The weight is only about 25 grams, and the living body waterproof design ensures that it can be used in most situations.[Easy to install, wide adaptability] This bicycle tail light can be installed in a few seconds through an adjustable nylon buckle strap. It is easy to install and disassemble, suitable for all types of bicycles, and can be hung anywhere on belts, running gear, reflective vests, backpacks, dog collars, seat belts or clothes. Install it on your bicycle, stroller, wheelchair, or anywhere you can think of.[Bicycle Tail Light Set] The USB taillight is made of high-quality materials, with good optical performance and durability. It will be your good friend for safe and healthy riding.Colour: black + blue + whiteMaterial: PC engineering plasticsPackage Contents:1 * Bicycle light1 * USB cableOnly the above package content, other products are not included.Note: Light shooting 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.