Light specification Lamp beads: LED+SMD (red/blue) Maximum range: 100-200 meters Charging method : USB charging (Type-C) Waterproof level: IPX3 Battery specification Use battery: built-in lithium battery Battery capacity: 800mAh Charging time: 4 hours Working time: 2-6 hours About this article MULTIFUNCTIONAL SAFETY LIGHT: Easy to install. Lightweight and durable bicycle taillight that can be mounted on any bike, kid’s bike, adult bike, handlebars, seatposts, dog collars or anywhere. It can also be used as a helmet light, backpack light, warning light, etc. SET YOUR OWN LIGHTING MODES: 5 light mode options: High LED, LED low, red-blue SMD strobe, high white SMD, low white SMD. You can switch modes according to your needs and different occasions to get the best lighting experience NO BATTERIES NEEDED: Built-in USB charging port for this bike taillight (USB cable included). Please charge it when the light is red. It will turn green when fully charged MORE THAN A BIKE LIGHT: The rear