Trek Ion 200 RT/Flare RT Light Set USB RechargeThe ultimate daytime running light set Help be seen while riding during the day with a compact and powerful set of front and rear daytime running lights. The Flare RT is smaller, more powerful, and features a longer battery life. The Ion 200 RT packs the same technology into a 200 lumen front bike light. Both lights are USB rechargeable, include easy to mount brackets, and feature a distinctive flash setting that is visible from up to 2km away.