4 light modes & brake detection: choose from flash, breathing, strobe, or steady; auto-brightens when you brake, making you more visible to other cyclists
auto-off for battery saving: after 30 seconds of inactivity, the light switches off; automatically turns back on with motion or touch; daylight sensor deactivates the light
50 hours of runtime & charging indicator: 400mah rechargeable battery lasts up to 50 hours; blue light flashes when it's time to charge
tough aluminum alloy & ipx6 waterproof: cnc-machined for durability; ipx6 waterproof rating protects against heavy rain
simple installation: mounts easily using either saddle or seatpost brackets with cable ties or rubber bands