Rayovac SE1WHLT-B Sportsman Xtreme 1-Watt Multi Function 4LED Headlight With Diffuser Rotating diffuser lens to illuminate a larger area Powered by 1 AA rayovac alkaline battery 1-Watt luxeon LED for 45-Lumens Multi-colored LED's: red for night vision and blue for tracking DC/DC regulated circuitry provides maximum light output throughout the life of the battery