Garmin Varia RTL515

The flasher manufactured by Garmin is a high-end cycling accessory. The product is positioned as a bike radar with a taillight function. It is compatible with Garmin's Edge bike computers and smartwatches, as well as popular smartphones based on Android and iOS. It can operate with the proprietary Varia app and third-party applications like Ride with GPS. The radar is claimed to detect vehicles approaching from behind at a distance of 140 meters and alert the cyclist with an audio signal and visual prompts (on the paired device) to enhance traffic safety.

The Garmin Varia RTL515 flasher is equipped with a single diode with a range of up to 1600 meters. It supports smart lighting and several manual modes — steady light, night and day flash, and peloton (during group rides, flashes occur less frequently to avoid disturbing other cyclists). The model is powered by a built-in battery that provides from 6 to 16 hours of autonomous operation. The battery is charged via USB, which is intended to add versatility. Other features of the accessory include its light weight (about 70 grams), high-quality water resistance of the plastic casing (compliant with the IPX7 standard), and a simple and quick installation procedure on the seat post.