︎【VARIOUS LIGHTING MODES】 The white headlights have 4 lighting modes: constant high brightness, constant medium brightness, constant low brightness and strobe (activated by double-clicking the button); the red tail lights have 6 lighting modes: Constant high brightness, constant medium brightness, constant low brightness, light flicker, medium flicker, strobe, click the button to switch. ︎【USB QUICK CHARGE】The 800MAH lithium battery is built into the front light, and the 540MAH lithium battery is built into the tail light. They only need an hour to fully charge. There is a hidden USB charging port on the side of the device, which can be connected to computer and other devices with USB port for fast charging, avoiding unnecessary battery replacement. ︎【LIGHT / ROBUST / WATERPROOF】 Bicycle light set use the PC plastic case, so you don’t have to worry about it being too heavy, it is suitable for both men and women. The USB interface is covered with waterproof and dustproof silica gel,