The Evo Nitebright™ 100 Bicycle Tailight is the perfect light for night-time rides. With its powerful COB 50 chip LED, it's sure to light up the way and keep you safe. The Micro-USB charging cable is included, so you can always keep it juiced up and ready to go. The weather-tough, water resistant design means you don't have to worry about it in any kind of weather. And, if the battery is running low, the flashing low battery indicator will let you know so you're never caught in the dark.