This non-reflective black pen is preferred by our armed forces and law enforcement offers in order to write in extreme situations.
It is also the ultimate pen for adventurists. It writes underwater, upside down, over grease and in extreme temperatures. This precision instrument was designed and tested by NASA for use in outer space.
You don't need to be an astronaut to fall in love with this pen with its super smooth ink flow. Writing upside down is no problem since it has a sealed pressurized ink cartridge.
The cartridge lasts 3x longer than ballpoint pens and is very easy and inexpensive to replace.
The pen is guaranteed for life on Earth and in Space.