With COAST Alkaline Dual Power technology that runs on a rechargeable ZX866 ZITHION-X battery (not included) or 6x AA Alkaline batteries, the Coast GX30 Waterproof Dual Power Flashlight provides dependable light in the dark. COAST PURE BEAM® optic and TWIST FOCUS technology enable seamless transitioning between Ultra View Flood Beam and BULLS-EYE Spot Beam modes, delivering up to 2300-lumens of brilliant light when you need it most. With fully sealed IPX7-rated construction, the waterproof and dust-resistant GX30 flashlight allows you to carry out your mission with confidence.