Laser is perfect for slide presentations, wall charts, and lectures. Power Class III laser has an output power of 4 mW.
Three silver-oxide batteries provide months of intermittent use or 2 hours of continuous use. Switch is momentary on/off. Size is 9/16-inch diameter x 2-3/8 inches. Weight is less than one ounce. Supplied complete with batteries and key-chain. Replacement battery Cat. No. 1039.