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. Trek Ion 200 RT & Flare RT Features Specifically designed focus, flash, and range offers ultimate daytime visibility Flare RT provides ultimate visibility for any road, city, or path Ion 200 RT provides 200 lumens of visibility via high-power CREE LED bulbs Integrated light sensor auto-adjusts brightness to your environment Connect with compatible ANT+ devices for always-on, battery status, and wireless control Easily attaches to your handlebars, helmet, or bike mount Includes Ion 200 RT, Flare RT, Quick Connect Mounts, and Micro USB charging cable Trek Ion 200 RT & Flare RT Specs Battery Li-Poly 3.7Vdc 420mAh 1.6Wh Rechargeable Micro-USB Charge Time 2 hours (Ion 200), 2 hours (Flare RT) Waterproof Rating IPX7 Wireless Compatibility ANT+ / Bluetooth Weight 80 grams (set), 40 grams (each light)