Inova XSDMA-HT XS Dual Mode LED Flashlight, Titanium Run Time on High is 1 hour 20 minutes and on Low is 26 hours Light Output on High is 53 lumens and on Low is 6 lumens High-powered energy efficient 50,000 hour LED Impact Resistant and shockproof, crushproof, and water-resistant 3-position operating end cap switch activates constant and momentary HIGH and LOW power modes and lockout modes