Tajima LED Headlight E501D Set Brand: Tajima Hybrid LED headlight that can use both dedicated rechargeable batteries and AA batteries. Brightness: 3-level switching: 500lm, 250lm, 50lm Illumination time: 8h (500lm), 12h (250lm), 21h (50lm) Power supply: Lithium-ion rechargeable battery LE-ZP3730 or 4 x AA batteries Includes an overhead band that can be worn without a helmet. Brightness (lumens)...500-999lm Features...Rechargeable