The Sofirn SP70 is a powerful outdoor flashlight kit. It can be used with two rechargeable 26650 or 18650 Li-ion batteries (with sleeves). Tail switch on / off, side switch controls two mode groups: Group 1 with 6 brightness levels and Group 2 with ramping capability. LED: CREE XHP 70 2nd gen. (6500k) Max Brightness: 5500 Lumens. Max beam distance: 750 yards. Peak Beam Intensity: 89733 cd. Batteries Compatible: (2x 26650) or (2x 18650 Batteries) (Batteries Not Included) Modes: Turbo, High, Mid, Low, Eco, Moon, Ramping. Reverse polarity protection from improper battery installation. Advanced Temperature Regulation (ATR) technology: ATR will adjust the brightness level automatically when the driver temperature reaches 60°C (140 °F) to prevent overheating. Two Light Groups - Group 1 is 7 Models Eco(60LM)-Low(400LM)-Mid(1200LM)-High(4000LM) and hidden Moon (2LM), Turbo(5500LM), and Beacon(1000LM), and the group 2 is ramping up and down ensure you get the exact level of brightness you need for any use. Durable & Water resistant - Aircraft grade aluminum and prime premium Type hard -anodized tough for extreme condition. IPX8 Water resistance ensures protection against splashing or spraying water from any angle. Power Indicator - Click the tail switch to standby mode or cut off the light; When in standby mode, The side switch indicator shows the status of battery and It will also be easy to find the light in the dark. Outdoor & Indoor Use - Powerful handheld flashlight makes it best for outdoor and indoors activities like camping, hiking, fishing, hunting, DIY projects, auto repair & emergency tools. Quite a decent gift for friends who like outdoors, sports and flashlights.