Garmin Varia UT 800 Smart Headlight with Dual Out-front Mount Price: $95.00 (as of 25/04/2019 10:56 PST- Details)

High-intensity cycling headlight for urban and trail use that’s visible in daylight from more than 1 mile (1.6 km) away
Projects a steady blast of 800 lumens for up to 1.5 hours
Automatically adjusts to ambient light conditions, speed and ride profile to extend battery life