The Energizer Hard Case LED Spot Light runs on 6-AA Energizer Max batteries (included). No more searching for those C and D batteries when it comes time to power up. Just use the AA batteries you already have and power through any circumstance where bright, intense, spot light is needed. You control the brightness and run time with High and Low modes. The rugged ABS, steel and rubberized construction make this light durable through the toughest of conditions.