The most amazing thing about the pen is the price. At $15 it costs the same as a Space Pen. Sure, it might not write underwater, but with all those tools you can repair a leak before you need to.

Curiously, there are a number of outlets hawking metal alloy-tipped pens that seem to work similarly. Jac Zagoory Designs, for instance, lists a pen called the Beta Inkless for $27.95.

The Omega AXL has a metal tip that writes in alloy, putting down a dark gray line. This means that the pen won’t smudge and can’t be erased — your writing will even survive if you drop your ...

The instrument claims to be ‘everlasting’ as it does not need sharpening like a pencil and users will not need to invest in expensive pen cartridges. The 4.EVER Pininfarina Cambiano is the ...

The first-gen Mi Pen was available for 19 Yuan ($2.77) but this new metal-clad Mi Metal Signature pen comes in at 24.9 Yuan ($3.63).