Note: Certain models of NiMH batteries may not be compatible with the P20 due to smooth flat negative terminals.Klarus P20High CRI Diffused PenlightThe Klarus P20 is a slim, pen-style LED flashlight with high CRI output. This light is perfect for eye inspections, reading in the dark and even everyday use. The slim body features a stainless steel pocket clip, making it easy to carry or attach to a clip board or clothing. Running on just two AAA batteries the Klarus P20 is lightweight and easy to keep powered up, making it the ideal lighting companion for doctors, mechanics or inspectors.Optical InspectionThe true power of the Klarus P20 rests in its high CRI Nichia 219C LED. Not only does the LED provide up to 230 Lumens of light, but it emits no blue ray damage making it safe to shine into a patient's eyes. Multiple lighting modes make pupil examination even easier, allowing users to adjust the brightness to suit the environment. For the ultimate in portability and patient comfort, the Klarus P20 is the professional level lighting tool for you.Features: Nichia 219C High CRI LED PMMA optical lens with 92% light transmission Professional lens design with evenly distributed spot light Zero blue ray damage (RG0) - easy on eyes for pupil examination Streamlined pen design that is lightweight and stylish Stainless steel pocket clip Mode memory saves the last used mode Reverse polarity protection prevents circuit damaged from reversed batteries Aerospace grade aluminum alloy body with mil-spec hard anodization Stainless steel bezel and hardened lens protect LED and reflector Specifications: LED: Nichia 219C Power Source: 2 x AAA Peak Beam Distance: 65 meters (213 ft.) Peak Beam Intensity: 1059cd Brightness Outputs: High 230 Lumens - 34 Minutes Medium 66 Lumens - 15 Hours Low 4 Lumens - 193 Hours IPX Rating: IPX-8 (2 Meter Submersible) Impact Resistance: 1.5 meters (5 ft.) Dimensions: Length - 5.25" (133 mm) Head Diameter - 0.55" (14.2 mm) Body Diameter - 0.55" (14.2 mm) Weight: 0.9 oz. (26 g)