The Swiss Army Pen

The pen body is based on the GP11 design (authentic Swiss Army rifle cartridge), with a twist action mechanism. The ink cartridge is made by Fisher Space Pen, and will write upside down, on grease or glossy surfaces, underwater, in zero gravity, freezing cold (-50F) and extreme heat (+400F). Lasts three times longer than ordinary cartridges and stores for 100 years.
Can use either pen or stylus refill at a time. Not a duo pen. STYLUS NOT INCLUDED Warranted for two years by Wagner of Switzerland.