【High brightness/large aperture】 The rear bike light adopts a COB light source, 180 degree visibility. Daytime running strobe lights make it easier for other road users to see you.

【Double click manual / automatic switching】 Double click the button to switch the racing bike tail light to manual or automatic mode. This bicycle lights includes motion sensor and light sensor. When moving the bicycle, the light is dim - the rear light turns on automatically; if the bicycle is not moved within 30 seconds, the rear light will automatically turn off. Long press to turn on and off during manual mode. The light will be auto on/off during auto mode, but it can't turn off.

【6 lighting modes】 ① Continuous light-60LM / 5H② Respiratory flash-50LM / 9.3H③ Comet flash-50LM / 10.3H④ Slow flash-50LM / 9.1H⑤ Mixed flash-50LM / 11.6H⑥ ECO flash-30LM-26.5 (if you want for a mtb lights to longer lasting light, select the sixth light mode - ECO flashing mode)

【IPX5 Waterproof and USB Rechargeable】 The bike taillight adopts a sealed case, which is waterproof and your reliable companion in bad weather. Charging 1 hour and 40 minutes = battery life of 26.5 hours of work. Charging method: power bank, USB charger or computer (fully charge before first use).

【Easy to install】 You can mount it under the saddle with a metal mounting bracket, or to the seat post with an adjustable silicone strap.