The durable Intensity Torch offers up to 545 lumens of brightness with adjustable beam operation, 5 lighting modes (including flashing) and it also features an impressive lithium-ion rechargeable battery that provides up to 1hrs 30 minutes of battery life on the highest setting. This torch uses Nichia LEDs that deliver a clinical white light in low, medium, high and Turbo settings. Charging is easy, slide the cover back to reveal micro-USB port. Attach charging cable until the indicator light turns green.