Item Type:Flashlights Flashlight Type:Work pen flashlight Lumen:250 Focal Length:Non-adjustable Switch Mode:High/Low Model Number:Medical Pen light Wattage:1W Lighting Distance:< 50 m Function:Hard Light Features: Color:red,white,black,purple,blue, green and yellow Use light bulbs: LED 2.2V Dimensions: Diameter 1cm,length 13.5cm Weight: 20g Stalls: Single Mode Reflector: plastic optical cup Battery: 2 AAA batteries ( not included ) Material: Alloy Material Made of anodized aluminum clip to hold it on your uniform,easy to carry Bright clear light push-button on/off switch low power consumption and long use time