Garmin Varia eRTL615 eBike Rearview Radar with Built-in Tail Light | Radar Alerts You of Cars up to 200 Yards Behind | Tail Light Makes You Visible up to 1 Mile Away | Stay Safe & Aware on Your eBike

The Garmin Varia eRTL615 is the only rearview radar purpose-built for eBikes — and the only Varia that never needs charging. Instead of an internal battery, it plugs directly into your eBike's electrical system through a compatible Garmin accessory cable, drawing power from the same battery that runs your motor. The result is a radar and tail light that is always on, always ready, and never something you have to think about between rides. The radar platform is identical to the proven Varia RTL515: a 24 GHz module with a 140-meter detection range and 220-degree viewing angle. When a vehicle approaches from behind, your paired device — a Garmin Edge cycling computer, a compatible smartwatch, or your phone with the Varia app — delivers an audible alert and a visual indicator showing distance and closing speed. You know what is coming before you can hear it. The integrated tail light runs in four modes: steady at 20 lumens, group/peloton at 8 lumens, night flash at 29 lumens, and day flash at 65 lumens, visible from up to 1 mile. The light automatically increases intensity when the radar detects an approaching vehicle, making you more visible at exactly the right moment. ANT+ and Bluetooth LE connectivity allow simultaneous pairing with a head unit and the Varia app. Compatible third-party head units include Wahoo ELEMNT, Hammerhead Karoo, and Bryton computers alongside the full Garmin Edge lineup. The unit is IPX7 waterproof and weighs just 50g with no internal battery. Mounting hardware includes a direct rack mount and a seat rail kit with adapters. Power input: 6–12V DC at 1.6W max. Garmin accessory cables are available for Bosch BES2, Bosch Smart System BES3, Shimano STEPS, Yamaha PWseries, and USB-C/USB-A external power sources. Select the correct cable bundle above for your eBike. Cable is NOT included with the standalone unit.

• REARVIEW RADAR FOR MAXIMUM AWARENESS : Ride with confidence using built-in radar that detects vehicles approaching from behind up to 140 meters (150 yards) away, giving you more time to react and stay safe on the road by providing visual and audible alerts on your compatible device"
• BRIGHT DAYLIGHT VISIBLE TAIL LIGHT: High-intensity rear light is visible from up to 1 mile away in daylight, helping drivers see you clearly in all riding conditions, including low light and busy urban streets.
• DESIGNED FOR eBIKES – NO BATTERY REQUIRED: Unlike traditional bike lights, the eRTL615 is powered directly by your eBike, eliminating the need to charge batteries and ensuring consistent performance on every ride via a compatible Garmin cable
• CONNECTS TO YOUR DEVICES: Seamlessly pairs with Garmin Edge cycling computers, compatible wearables, and smartphones via ANT+ and Bluetooth, providing real-time visual and audible alerts.
• EASY INSTALLATION & RELIABLE PERFORMANCE: Quickly mounts to most seatposts and is built for durability with IPX7 water resistance, making it ideal for daily commuting and long-distance rides in various weather conditions.
• ADJUSTABLE LIGHT MODES: Varia eRTL615 rearview radar features 4 light modes, including peloton mode, which provides a low-intensity flash that is kind to other cyclists’ eyes when riding in a group.
• IN THE BOX: Varia eRTL615 radar tail light (direct rack mount), 2-bolt to friction flange mount adapter, Seat rail mounting kit, Documentation