The Bullet Space Pen ($22) is designed to be both functional and sophisticated. This writing instrument is equipped with a patented ink cartridge, able to write in temperature from -30 ºF to +250 ºF, underwater, in zero gravity and at any angle, even upside down. It features an all brass construction with a chrome finish and is perfectly sized to carry in your wallet, pocket, car glove box, organizer or utility box.