WOTOW Bicycle Cycling USB Rechargeable Tail Light 30 Leds 3 Modes Back Rear Red Flashlight Lamp 30 super-bright red extreme LEDs and seven modes remind someone else of keeping distance USB rechargeable, 3 modes: High light, Low light, Flashing. Weather resistant build, safer in water fog when riding in the rain Charge time: 2~3hours when the indicator light turn green. Run time: 2~6hours depends on models. Quick mount without any tool, quick release.