LIGHTFE Pen Light for Doctors and Nurses Penlight with Pupil Gauge, LED Source 150 Lumens (Max.Output) Frog Eye Optical Lens Zoomable for Auto Repairs, EDC Illumination, GOG Walking. (White)

D12 Utilizes XPG LED source, you can select cool white or yellow color light satisfied with your demand. LED lifespan is up to 50,000 hours.
Powered by 2*AAA alkaline battery (included), set up 3 levels brightness High / Medium / Low. Extended runtime 15 hours @ Low.
Equips with ultra-clear frog eye optical convex lens, design of handed rotation head zoom in spot light and zoom out flood light.
Apply with intelligent digital regulated current output and constant brightness; intelligent chip circuit memory remember the current mode and recall when the next time you turn on the flashlight.
Reverse polarity protection prevent the circuit critical components damage from improper battery insertion.