DeFF's Diminutive Premium Pen

As with Studio Neat's minimalist Mark Two Pen, Japanese design firm DeFF has also designed a tiny but premium writing instrument. Their Refill Pen Jacket Extra Short (the name loses a little something in translation) goes from 75mm (2.95") closed to 125mm (4.92") in the writing/drawing configuration.

The body of the the diminutive pen is stainless steel, and it's offered with multiple finishes: Brass, grey titanium, and anodized aluminum in black, aquamarine or ruby.

It takes standard D1 and 4C refills.

They also offer engraving.

There's even a little companion refill case.

The pen runs $50 regardless of finish, and the refill case is $20.