The bold design of the MDF® LUMiNiXâ„¢ Professional Diagnostic Penlight is inspired by Art Deco, the unique style that unified modern art and industrial purpose with geometric forms and streamlined shapes, making this luxurious lighting instrument a leader in its class. Of paramount importance to the LUMiNiXâ„¢ design is the precision handcrafted solid aircraft aluminum construction that characterizes the appearance and optimizes functionality. LUMiNiXâ„¢ is equipped with a variable focus beam and push end-cap button. Bulb: Standard illumination. Batteries: Requires 2 AAA batteries (not included).