Divide+ 250L LED Flashlight Battery lock system stops battery drain to Preserve battery life and reduce corrosion to protect your device Lumens: 250 (high), 25 (low) 2 modes: high and low Runtime: 3 hours (high), 35 hours (low). beam distance:160 m(high),40 m(low) Lifetime leds never need replacing. Powered by 2 aa-batteries, (installed)