Power Tank Pen by UniBall

The Ultimate Geocaching Pen!!!

Writes on wet paper, upside-down, in temperatures down to -20 °C, and even in zero-gravity, fulfilling all your writing needs wherever you may be!

• Pressurized ink tube allows it to write smoothly in extreme conditions.
• Features Uni-Super Ink that helps prevent against check and document fraud.
• Textured rubber grip provides extra comfort and control.
• Semi-transparent barrel lets you monitor the ink supply.
• Retractable to protect pockets and purses.
• Available in Black or Blue ink
• 1.0 mm tip