400 Bullet Space Pen
Last verified by the Lifetime Picks Editorial Team
Why we picked it
WIRED's Iconic EDC Pen: writes upside down, underwater, in space
The pen NASA used on the Apollo 7 mission and every manned mission since. Pressurized ink cartridge writes at any angle, in zero gravity, underwater, in extreme temperatures. Tiny when capped, full size when posted.
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Awards & Recognition
Community & Review Summary
15,873 Amazon reviews
r/BuyItForLife satisfaction
Total mentions (180 positive)
Amazon category rank
Price History
We began tracking this price on Jun 19, 2026. The chart fills in as more prices are recorded; see CamelCamelCamel below for older history.
Pros & Cons from Reviews
Pros
- +Writes upside down, underwater, in space
- +Pocket-sized when closed
- +Made in USA since 1948
- +Cartridge lasts 100+ years sealed
Cons
- -Refills only fit Fisher pens
- -Some prefer thicker barrel
Independent Video Reviews
Hands-on reviews from independent channels (not the manufacturer), covering what they like and what they do not.
Warranty & Returns
Warranty
Lifetime
Return Policy
Most items are returnable within 30 days of receipt for a full refund. Some categories have shorter return windows.
Read full return policy