Despite its decidedly small footprint this rechargeable flashlight is capable of generating a truly incredible beam of light. Its amazing feature in fact is the Turbo mode which allows for maximum light output in an instant. The #3933 has a basic output of 2500 lumens that becomes 5000 lumens with Turbo mode but it also has a simpler zoom mode.Features: Rechargeable Flashlight With 2500 Lumens Of Power And 5000 Lumens In Turbo Mode In Metal Works With A Rechargeable 20650 Battery (Included) 4 Modes: 100%: Power Off After 2hrs 40%: Turn Off After 8hrs 5%: Power Off After 10hrs Turbo: Power Off After 10s Zoom Function Waterproof Usb Cable Included Charging Time: 5hrs Weight 300gr