Magicshine Seemee R300 Smart Radar Taillight Safety Dance The Seemee R300 combines a 300-lumen taillight with a radar that spots vehicles up to 140 meters behind you. It sends alerts to a compatible bike computer, so you can see what's coming without looking over your shoulder. Separate buttons control the light and the radar, and the light wakes up when it feels you move. Features ANT+ radar, spots approaching vehicles up to 140m behind and sends alerts to compatible cycling computers300-lumen output, high-power LEDs with a wide viewing angle for strong visibility Peloton Sync Flash and group ride mode, coordinates flashing with compatible taillights Separate light and radar buttons, manage each function on its own Auto wake-up and lock function, sleeps after 5 minutes idle, wakes on vibration, and prevents accidental turn-on3350m Ah battery, up to 100 hours of runtime with USB-C charging Round and aero seatpost mounts included, tool-free quick-release installation SPECIFICATIONSIntended Use Road, Commuting, Group Rides Max Output300 lumens Radar24GHz-24. 25GHz, detects vehicles up to 140m Wireless Protocol ANT+, Bluetooth Battery3350m Ah Runtime8 to 100 hours (radar off); up to 26 hours in radar-only mode Charging USB-CWaterproof Rating IPX6Material Aluminum with plastic Mount Tool-free quick-release, round and aero seatpost mounts included | Magicshine | Seemee R300 Smart Radar Taillight 300 Lumens