Seiko’s compact rectangular solar watches are now available to buyers outside Japan, but getting one will cost more than the official domestic price.
The four models, HFJ001P, HFJ002P, HFJ003P, and HFJ004P, belong to Seiko’s nano universe Special Edition lineup. These slim, small-format watches were originally offered as Japan-only releases through selected stores, making them difficult for international collectors to purchase through standard retail channels.
That limited availability is exactly what has pushed overseas buyers toward Japanese exporters. One exporter has now listed all four models for international purchase, giving fans outside Japan a chance to order them directly. However, the convenience comes with a noticeable markup.
In Japan, Seiko prices the two leather-strap versions from 35,200 yen, which is roughly $220. The stainless-steel HFJ001P is priced at 38,500 yen, or about $241, while the gold-tone HFJ002P costs 41,800 yen, around $262.
The export prices are significantly higher. The HFJ001P is listed at 52,900 yen, around $331, while the HFJ002P is priced at 57,500 yen, about $360. That works out to roughly 37 percent above Seiko’s official Japanese pricing for both metal-bracelet models.
The leather-strap models are priced differently despite sharing the same official retail price in Japan. The black HFJ004P is listed at 48,400 yen, around $303, while the pink-gold HFJ003P is offered at 43,000 yen, around $269. All four watches qualify for free shipping from the exporter because they exceed the $250 threshold, though buyers in the United States may still need to pay duties and taxes at checkout.
The reason for the higher prices is tied to how Seiko is distributing these watches. The models are part of a collaboration with Japanese fashion retailer nano universe and are supervised by the brand. Seiko describes them as limited to specific stores, with no official online sales route listed for international customers. That makes exporters one of the few practical options for collectors outside Japan.
What makes these Seiko rectangular solar watches especially interesting is their size. Each model measures just 27.4 mm by 18 mm, with a thickness of only 5.9 mm. That makes them smaller and slimmer than many well-known rectangular dress watches, including popular small-case luxury alternatives. For anyone looking for a refined, vintage-inspired Seiko with a compact profile, these models stand out immediately.
Inside, all four watches use Seiko’s V115 solar movement. It is a simple two-hand caliber powered by light, with a full-charge running time of around one year. Accuracy is rated at approximately plus or minus 15 seconds per month, which is typical for this type of quartz solar movement.
The watches also feature Seiko’s Hardlex crystal and basic daily-life water resistance. These are not sports watches or rugged outdoor models. Instead, they are designed as slim everyday dress watches with a minimalist rectangular case, clean dial layout, and a fashion-forward feel.
The lineup includes both metal-bracelet and leather-strap options, giving buyers a choice between a more jewelry-like finish and a softer, classic dress-watch style. The gold-tone and pink-gold finishes add a warmer, more elegant look, while the steel and black options offer a more understated appearance.
Seiko and nano universe have collaborated before, so this release is not a one-off experiment. The retailer has previously worked with Seiko on other compact quartz models, and this latest solar-powered rectangular series continues that relationship with a more refined and ultra-slim design.
For international Seiko fans, the appeal is clear: these are compact, solar-powered, Japan-focused special editions with a distinctive rectangular case and a very wearable profile. The downside is equally clear: overseas buyers will likely pay well above the official Japanese retail price.
Still, for collectors who appreciate small dress watches, Japanese-exclusive Seiko releases, and solar quartz convenience, the HFJ rectangular series may be worth the premium. The combination of limited availability, elegant proportions, and practical solar charging gives these watches a niche appeal that could make them highly sought after beyond Japan.
