A Tokyo-based clothing store known for its minimalist clothing and streetwear, nano universe (or more properly, nano.universe) is collaborating with Seiko for the second time this year. The result is five timepieces sporting black coated cases and funky dials that draw inspiration from military timepieces.

They are loosely based on aviator’s and dive watches of old, with many details that will be familiar to military watch enthusiasts. The Gothic-font Arabic numerals are taken from 1930s pilot’s watches while the California dial will be familiar to Panerai (and Rolex) fans.

All models have black-coated, 42mm steel cases. They are powered by the 4R35, Seiko’s robust self-winding movement with a date function and hacking seconds.

Three models are fitted to black canvas bands (above: SCVE041 and SCVE039, left and right respectively). The edition size is 500 pieces each, except for the SCVE043, which has a Submariner-esque camouflage dial – that’s limited to 300 pieces (below). The canvas band versions are ￥30,240, about US$289.

Clockwise from top left: SCVE035, SCVE037 and SCVE043

The remaining two models are matched with black-coated steel bracelets and are limited to 500 pieces each, priced at ￥35,640, or about US$341. (Pictured above, SCVE035 and SCVE037, left and right respectively.)

All are available only in Japan at nano universe stores.