






🖋️ Write Beyond Limits — The Pen That Defies Gravity and Time
The Fisher Space Pen Bullet 400 Series X-Mark is a compact, precision-engineered writing instrument featuring a pressurized ink cartridge that writes smoothly in extreme temperatures (-30°F to 250°F), underwater, and zero gravity. Crafted from durable brass and steel with a tungsten carbide tip, it combines rugged reliability with a sleek matte black design. Hand-assembled and backed by a lifetime guarantee, it’s the go-to pen for professionals and adventurers who demand flawless performance anywhere.
| ASIN | B001VEE3ES |
| Best Sellers Rank | #155,984 in Office Products ( See Top 100 in Office Products ) #3,755 in Retractable Ballpoint Pens |
| Brand | Fisher Space Pen |
| Closure | Click-Off Cap |
| Color | black |
| Customer Reviews | 4.4 4.4 out of 5 stars (143) |
| Date First Available | 23 June 2012 |
| Grip Type | Squared |
| Ink Color | Black |
| Item Weight | 45.4 g |
| Line Size | 0.5mm |
| Manufacturer | Space Pens |
| Manufacturer Part Number | 400BWCBCL |
| Material Type | Alloy Steel Brass Tungsten Carbide |
| Model number | 400BWCBCL |
| Number of Items | 1 |
| Point Type | ball tip |
| Product Dimensions | 9.14 x 0.76 x 0.76 cm; 45.36 g |
| Size | black |
A**Z
Excelente producto, aún con la tapa es un poco pequeña pero muy portable, escribe bien y perfecta para un edc
A**M
The writing experience was smooth and pleasant.
O**O
スペースペン大好きです。 ポケットに忍ばせるミニペンとして重宝します。
O**R
Despite the advertisement that it works underwater, that may only be true for all temperatures at 1 bar. It may not work when submerged in supercritical water at high pressures and temperatures above 110C. It may also freeze in antarctica or in siberia. In most situations you are likely to encounter, it writes. Not amazingly well, and a gel pen or a fountain pen will give a more satisfying result on good paper (the result is slightly better than with a pencil), but it will work on basically every surface and in the vast majority of situations.
T**A
Subtle differences over the standard bullet space pen are SO worth it! The flat top make it easy to know which end is which and make it slightly shorter when close - which is the whole point, pun intended, of this pen style. The clip is a MUST HAVE! Without the clip it's easy to loose - rolling off everything and/or slips through pen loops. Plus this is fixed, not a slip-on add-on. The matte black finish is very easy to hold, no fingerprints, not inclined to slip out of pockets or loops. Very stealthy! If I do ever loose it, I will definitely buy it again. If gifting, it comes in a really nice plastic case - great for repurpose to hold small items.
Trustpilot
2 months ago
2 weeks ago