Be seen, day or night. The Flare RT is one of the best rear lights available.Specifically designed focus, flash and range for ultimate daytime visibilityThe interruptive flash pattern produces up to 90 lumens for ultimate daytime visibilityThe integrated light sensor auto-adjusts brightness to your environmentConnect with Garmin® and Bontrager ANT+ devices for always on, battery status and controlFlash modes: 90 lm-6 hrs, 45 lm-12 hrs, 5 lm-15 hrs Steady modes: 25 lm-4.5 hrs, 5 lm-13.5 hrsConfidently ride through wet conditions with an updated USB port and IPX7 waterproof ratingBattery-save mode provides 30 minutes of additional runtime when battery life reaches 5%Includes Flare RT, rear Quick Connect bracket, and Micro USB charging cable