Small but mightyA daytime running light is the easiest and best way to keep riders safe and visible. The Ion 200 RT provides the proven safety of a daytime running light in a compact and powerful USB rechargeable package, and it features a distinctive flash pattern that's visible from up to 2 km away.Product detailsThe specifically designed focus, flash and range offers ultimate daytime visibility200 lumens via high-power CREE LEDThe integrated light sensor auto-adjusts brightness to your environment200 lm-1.5 hrs, 100LM-3 hrs, 5 lm-14.5 hrs, Night Flash-30 hrs, Day Flash-12 hrsEasily attaches to your handlebars, helmet or bike mountBlendr-compatible for simple, secure attachment to compatible stems and helmetsConnect with compatible ANT+ devices for always-on, battery status and wireless controlIncludes Ion 200 RT, front Quick Connect bracket and a Micro USB charging cableSee me nowResearch shows that riding with a flashing, daylight-visible rear light is the single most effective mea