This bike lights set includes a headlight and a taillight, powered by a USB C rechargeable battery, no need to frequently replace disposable batteries. The headlight provides 4 lighting modes and the taillight offers 5 modes, which can be adjusted to meet different brightness needs for night riding. Made of durable ABS housing, it is easy to install without extra tools, fits most bikes. Suitable for men, women and kids, perfect for night riding on road and mountain bikes, improving riding visibility and safety at night.