Introducing the RR1 from Full On Lighting. Please note that this is to preorder your RR1s for fall 2026. The RR1 will be shipping in September 2026. The RR1 is the simple and effective rear light you’ve been looking for. Whether you are logging early-morning road miles, navigating busy city streets on your daily commute, or riding pavement to transit out to your local gravel and mountain bike trails, the RR1 is the tool for the job. This light combines an ultra-lightweight 25-gram CNC aluminum chassis with automated smart-braking technology. It is built for riders who want high-visibility protection, clean integration, and maximum value without the cost, weight, or pairing headaches of complex radar systems. The RR1 leverages a low-profile form that mounts seamlessly under a saddle or on a seatpost. By ditching the heavy plastic housings and app dependencies of rear lights, we’ve focused on utility: turn it on, snap it in place, and ride. The custom optic casts a wide 220-degree beam pattern that ensures you are seen at busy intersections and side streets as well as from directly behind. Whether you are battling urban traffic or spinning out to the singletrack, the RR1 delivers smart, effortless protection every time you hit the pedals. Check out our FAQs here. Features Smart Braking Get the safety benefits of active, intelligent lighting without managing Bluetooth apps, head unit connections, or constant radar beeps on your handlebars. The RR1 actively monitors your motion across every light mode. The moment you apply your brakes or slow down, the internal sensor triggers a 3 second, high-intensity 100-lumen burst. This automated flash provides an immediate, eye-catching warning to approaching drivers and trailing riders, giving traffic crucial extra time to react when your speed drops unexpectedly. 220° Wide Angle Optics Commuters and trail transit riders face the most danger at urban intersections and cross-streets, not just straight-on highways. The RR1 features high-transparency Fresnel optics that project a broad, 220-degree beam pattern, illuminating side streets, blind spots, and lane merges from over 1,000 meters away. Auto Sleep/Wake For zero-friction daily use, the light automatically enters an energy-saving sleep mode after 120 seconds of standstill at a coffee shop, at work or back at home. As soon as you touch your bike or start rolling, the RR1 wakes right back up to your active setting. Featherweight 25g CNC Aluminum & Magnetic Quick-Release Heavy, clunky plastic rear lights rattle loose on dirt trails and look out of place on clean road bikes. Weighing just 25 grams, the self-contained RR1 packs a rechargeable 420mAh lithium cell inside a precision CNC-machined aluminum body built to handle severe trail vibration, mud, and heavy rain (IPX6 waterproof). For everyday commuting convenience, the RR1 features a high-strength magnetic mount: pop the light off in one second to charge via USB-C or tuck it in your pocket when locking up outside, leaving your mount secured. Out of the box, you mount the light tucked cleanly out of harm's way under your saddle rails or strapped securely around your seatpost. Specifications Mode Lumen Output Runtime High steady 30 Lumens 5.5 Hours Medium steady 15 Lumens 12 Hours Low steady 5 Lumens 20 Hours High conspicuity flash 100 Lumens 10 Hours High quick flash 15 Lumens 24 Hours Low slow flash 5 Lumens 40 Hours Automatic Brake Light: bright 100 lumen, 3 second burst Automatic sleep/wake mode: Turns off after 2 minutes without moving and turns back on when movement detected Wide-Angle Fresnel Optics: 220° for good side and rear visibility USB-C Connectivity: Simple, modern charging interface. Waterproof to IPX6: Milled aluminum casing is fully sealed against downpours, severe road spray, and harsh weather conditions. Ultra-Low Unit Weight: 25g Compact Cylindrical Design: 33.5mm diameter and 30.2mm deep Quick-Release Magnetic Mount: High-strength magnetic attachment for instant removal. 2-Year Comprehensive Warranty For more information check out our FAQs and Technology pages. *Specifications subject to change without notice What's In The Box RR1 rear light Seatpost mount with rubber spacer 2 x O-rings for seat post mount Seat rail mount Hex key USB-C charging cable