Bulb: RX0H Bin Luxeon 1W LED - 100,000 hour life.
Battery: One 1.5V AA lithium non-rechargeable, alkaline, NiMH or NiCd battery.
Circuitry: Voltage regulation circuit. The initial current input to the LED is 350ma.
Body material & coating: 6061 Al with Hard Anodized Type III coating of > 40um thick. Natural color.
Reflector: Made of aluminium.
Covering lens: Mineral glass lens with coating to allow high degree of transparency.
Switch: Standard tail clicky (slight press -> momentary on, click -> constant on).
Dimensions: 91 mm/3.58 inch (length) x 20 mm/0.79 inch (the largest diameter)
Weight: 39 gram/1.376 ounce (without the metal clip& without battery)
Weather resistance: O-ring sealed for water resistance.
Included Accessories: wrist lanyard and a small metal clip.
