CatEye Rapid X2 Rear Light BE SEEN: The Rapid X2's high-power white LEDs give off 80 lumens for excellent visibility day and night. LIGHT FOR EVERY RIDE: Whether you're riding in broad daylight or complete darkness, we've got you covered. The Rapid X2 offers high, low, flashing, rapid, pulse, and vibration light modes. GO THE DISTANCE: Your Rapid X2 won't stop until you do, providing up to 30 hours of battery life on a single charge. SECURE AND GO: Spend less time setting up your gear and more time on the road. With the included rubber band, you can easily mount, adjust, and move your light by hand. ALL WEATHER PROTECTION: Don't let a little rain stop you from riding. Your CatEye safety light is approved to work in all weather conditions.