The US price of the base Apple Watch has not moved in eight years. In Japan it is up about 45 percent.
The Apple Watch Series 4 launched in September 2018 at $399. The Apple Watch Series 12, announced this month, also starts at $399. Eight years, and Apple didn't move the US price by a single dollar. In Japan, the same product went from about ¥49,500 to ¥71,800 over that same stretch, an increase of roughly 45 percent. Most of that, but not all of it, is the yen. The currency weakened by about 39 percent against the dollar over those same eight years, which on its own explains the bulk of the gap. The remaining piece, a few percentage points on top of that, is Apple's own doing: a margin adjustment beyond what pure currency pass-through would predict.
I've written before about how Mac mini and iPhone prices have moved in both the US and Japan over the past couple of years, which makes it hard to separate how much of any given gap is a genuine price increase and how much is currency. The base Watch model actually lets us separate those two effects cleanly, because the US price never moved at all. Currency depreciation accounts for roughly 39 of the 45 points. Apple's own margin adjustment accounts for the rest. Nearly all of it happened on the one configuration Apple has never touched in the US.
The 46mm size tells a smaller, related story, and it's worth including for honesty's sake. That configuration has cost $429 in the US every year since the Series 4 launched in 2018, an eight-year streak Apple just broke with the Series 12, raising it to $449. Japan's 46mm price moved too, by about ¥4,000. Even the one US price Apple did touch this year moved by roughly the same proportion in both currencies. That's really the detail that makes the base-model comparison worth trusting rather than undermining it: Apple does raise US prices when it decides to, and when it does, Japan moves with it. The 42mm case is the one where Apple chose not to, and Japan moved anyway.
This is the same mechanism I've described elsewhere in this series: Apple periodically resets regional pricing with reference to a dollar-denominated target, and a weaker yen against the dollar over time gets folded into that local price whether or not the US number moves. The Watch is just the version of this story with nothing else muddying it. No memory shortage, no chip generation change driving cost, no US price hike to point to. Just the same object, the same price in dollars, and a currency that's done nearly all of the work on the other side.
What makes this worth noting isn't really about a watch. It's that a product Apple explicitly protected US customers from repricing on still got meaningfully less affordable for customers in Japan, with no change in the underlying good and no announcement anyone would have noticed. If you're only checking the US price to gauge whether something got more expensive, you're missing exactly this kind of gap, and it's probably showing up in more of your everyday purchases than you'd guess.
Worth checking the yen price next time you see a US number that looks unchanged. Unchanged in one currency doesn't mean unchanged everywhere.