The Ollech & Wajs P-104 is a pilot specific version of the P-101 military tool watch. It shares the same overbuilt construction and has a similar layout emphasizing legibility, but has swapped the 12-hour bezel for a circular slide rule, and gained orange accents. More technical and aggressive in its appearance, it’s a non-traditional take on the ever-popular pilot concept.

The P-104 features orange lume-filled applied markers at three, nine, and twelve, immediately giving it a distinctive look. Things quickly get technical as the chapter ring and external bezel combine to create a slide rule, which can be used for basic math, currency conversion, as well pilot-specific tasks like determining differential speed, distance, and range. The P-104 is modestly sized at 39.56mm x 49.5mm x 12.5mm, making it wear well on most wrists, and built solid as a rock, maintaining a confidence-inspiring 300m of water resistance. 

Powering the Ollech & Wajs P-104 is an ETA 2824-2 Swiss-made automatic caliber. A tool watch standard, it features 25-jewels, a power reserve of 38 hours, hacking seconds, and a frequency of 28,800 beats per hour. Ollech & Wajs have modified the movement with an engraved mainplate and a customized rotor.

The P-104 is available on a color matched nylon strap or with an additional OW S-Type Mark II steel bracelet.