Garmin Varia eRTL615 Cycling Rearview Radar & Tail Light

Amazon - Garmin

A rearview radar and tail light designed for eBikes, powered by the bike's onboard battery, alerting cyclists to vehicles approaching from behind.

• Type: Rearview Radar & Tail Light
• Power Source: eBike onboard battery (no internal battery)
• Compatibility: eBikes (or USB power bank)
• Function: Alerts to vehicles approaching from behind