The versatile P7R Core flashlight offers exceptional power and forward-thinking technologies like the Smart Light Technology for custom light functions. The lamp is powered by a 21700 Lithium-ion battery, which can be easily changed by opening the end cap. Thanks to our Flex Sealing Technology, the P7R Core is protected against water and dust, and can even be used underwater for a short time. Our patented Advanced Focus System works with up to one meter of water depth. This makes the P7R Core the ideal flashlight for every occasion.