Aside from outstanding lumen capacity and industry-leading usage time, the Recon HL1800 monitors ambient light to change output accordingly, helping to save battery power for when you need it. Shines brighter, runs longer and works smarter.FEATURESSmart Mode light sensor monitors ambient light to adjust light output accordinglyPairs with Garmin series computers via ANT+ to see battery information and light mode on screen (HL1800 only) ANSI certified lumens and run timeFocused optics with side light design for over 270-degrees of visibilityHeat-dissipating CNC-machined aluminum casingPower status indicator alerts remaining run-time before powering offIncludes adjustable GoPro mountSize: 103x32x47mmWeight: 190g without mountColors: BlackOutput: 1800 lumensRuntime: High (1800LM) 1.5hrs, Middle 3.5hrs (900LM), Low 7hrs (450LM), Smart Mode Day (100LM>450LM) 40hrs; Smart Mode Night (900LM) 3.5hrs, Flash (100LM) 65hrsBattery: Li-Ion polymer battery (6400mAh)Water resistance: IPX6Certifications: ANSI-Standard FL-1