The Dyson Biro is a rare ballpoint that was never sold at retail.
The pen has an all-metal body and telescopic design.
Pen length is 140mm
Full length including casing is 161.5mm
With a long, simple cylinder made from brushed stainless steel so that it’s both durable, and comfortable, to hold. The design of the Dyson Biro’s clip actually keeps more weight on one side so it resists rolling.
The replaceable ballpoint ink cartridge (D1 Mini refills) is housed in a smaller stainless steel tube that extends as you click the clip on the other end.
Origin story (publication from Gizmodo):
Over the span of a few months, 20 of Dyson’s own engineers–including James Dyson himself–spent their weeknights and weekends designing a suitable replacement from the ground up. 50 prototypes later, the Dyson Biro (which is actually the technical term for a ballpoint pen) is as streamlined and simplified as a pen can be.
This pen comes with a transparent casing with metal caps and rubber lid competing this as a truly collectible piece.