Take notes with ease even in the darkest of domes or during night observations or inside the Physics Lab. A red LED illuminates your paper while preserving your night vision. Easy to switch on/off using the rubber grip. You can find cheaper pens, but they may break after one use like the competing design we tried. Leave the clear pen cap on and use the pen as a mini flashlight. Two button cell batteries required (included). Metallic Smoke finish, black ink (replaceable cartridge).

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