The Watches People Abroad Actually Order from Japan, and Why: A Bestseller List Explained

People abroad order watches from Japan for three reasons, and the bestseller list shows all three: Japanese-market references that aren’t sold in their country, prices that are low even before you compare, and Casio’s radio-solar watches — the ones that set themselves and never need a battery — which Casio makes in far more variety for Japan than for anywhere else. Below is the men’s watch bestseller list of the Japanese export shop this site links to, what each watch is, why it sells, and which ones make good gifts.

I’m a designer in Japan, not a watch dealer. This page doesn’t tell you which of these is “best”; it reads a real sales ranking — the shop publishes top sellers by category and updates it daily — and explains it with Casio’s official Japanese specifications and a check of Casio’s US product pages. If you want the background on why some Seiko and Casio references are Japan-only, that’s in the Japan-only watches guide. For watches chosen purely as gifts, see the graduation watch guide and three G-SHOCKs I’d give.

The list, on 12 September 2026

Discovery Japan Mall’s men’s watch bestsellers, in order, with the shop’s yen price that day and the number of customer ratings the listing showed:

#	Watch	What it is	Shop price	Ratings	On Casio US site?
1	Casio G-Shock GW-BX5600-1JF	2025 square, MIP display, radio-solar, Bluetooth	¥30,554	2	Not listed
2	Casio Collection W-221H-1AJF	90s-style digital, 38mm, 10-year battery	¥6,147	1	Not found
3	Seiko Spirit SBTQ045	Quartz chronograph, 10 bar	¥16,058	13	(Seiko) not in current catalog
4	Casio Collection W-S220-9AJH	Solar digital sports watch, 10 bar	¥5,376	2	Not found
5	Casio Lineage LCW-M100TSE-1AJF	Titanium radio-solar, sapphire, 9.4mm	¥28,938	21	Not found
6	Seiko Alba AQPK401	Quartz sports watch	¥6,670	9	(out of stock when checked)
7	Seiko SND399P	Quartz chronograph	¥16,170	0	(Seiko) not in current catalog
8	Casio G-Shock GW-M5610U-1CJF	Classic square, radio-solar	¥20,832	0	Not found
9	Casio Wave Ceptor WVA-M630B-3AJF	Radio-solar analog-digital, cloth strap	¥13,367	23	Not checked
10	Casio Wave Ceptor WVA-M650D-1A2JF	Radio-solar analog-digital, steel bracelet	¥22,915	16	Not found

Seven of the ten are Casio. Five of the ten are radio-solar. Three cost under ¥7,000. That is the story.

Three reasons the list looks like this

1. Casio makes more for Japan than for anyone else. Casio’s Japanese catalog has whole lines that barely exist abroad — Lineage (titanium radio-solar dress watches), Wave Ceptor (radio-solar everyday watches), and the domestic “Casio Collection” digitals. When the exact references on this list were checked on Casio’s US site, five of them returned no page. Similar models often exist abroad under other numbers, but the Japanese versions are what people order.

2. Radio-solar as a habit. In Japan, a watch that charges from light and sets itself from a radio signal is ordinary; office workers wear them for decades. Casio’s Multiband 6 receives time signals in Japan, North America, Europe and China, so the habit travels. Five of the ten bestsellers are radio-solar, from ¥13,000 to ¥30,000.

3. Price. A new-for-2026 Casio at ¥6,147 (about $40), a solar sports watch at ¥5,376, a titanium-and-sapphire radio-solar at ¥28,938 (about $195). Even with shipping and any duty, these are hard to match locally, and the sub-$50 items travel in the same parcel as something bigger.

The watches

1. Casio G-Shock GW-BX5600-1JF — the new square

The 2025 5600 square with a MIP display, solar charging, radio time correction and Bluetooth phone sync, in a biomass-plastic case. It has been the shop’s top seller since this site first checked it, and it wasn’t listed on Casio’s US site. It is covered in detail — specifications, who it suits, what to check — in three G-SHOCKs I’d give, so this page only notes that it holds first place.

2. Casio Collection W-221H-1AJF — the $40 retro digital

What it is. A digital Casio in the 90s style, released in Japan in February 2026. Casio describes it as taking the retro design and pursuing the current mid-size trend: the case is 38.4mm across, which is why it sells to people the oversized digitals don’t fit.

Why it sells. Price, newness and size. It is the newest watch on the list, it costs less than lunch for two, and at 38mm it fits a woman’s or a teenager’s wrist as well as a man’s. Its reference wasn’t found on Casio’s US site when checked.

Confirmed (Casio Japan): 43.7 × 38.4 × 12.2mm; 35g; resin case, bezel and band; 5 bar water resistance; battery life about 10 years; resin glass; band fits 145–215mm; world time (48 cities), stopwatch, timer, alarm, LED backlight; released February 2026.

As a gift. For almost anyone. A student, a teenager, a colleague, a stocking. Not a dress watch, and not for swimming beyond 5 bar.

4. Casio Collection W-S220-9AJH — the solar sports watch

What it is. A large digital sports watch with Casio’s Tough Solar charging, 10 bar water resistance and a lap timer. Casio notes the reference changed from W-S220-9AJF to -9AJH with no change in specification.

Why it sells. It is a solar watch for ¥5,376. No battery to change, 10 bar, and a lap function for runners. The reference wasn’t found on Casio’s US site.

Confirmed (Casio Japan): 51.7 × 49.8 × 14.6mm; 46g; resin case, bezel and band; 10 bar water resistance; Tough Solar; resin glass; world time (48 cities), stopwatch with lap memory, timer, alarms; released July 2021.

As a gift. For someone who runs, swims or camps and wants a watch they never think about. It is a big case at nearly 50mm, so not for small wrists.

5. Casio Lineage LCW-M100TSE-1AJF — the titanium sleeper

What it is. Casio’s Lineage line is what Japanese office workers wear when they want a metal watch that is always right and never needs a battery. This model is titanium, 9.4mm thin, with a sapphire crystal, Multiband 6 radio correction, Tough Solar, and a small digital window at six for the date and a second time zone.

Why it sells. Twenty-one customer ratings on the shop’s listing — the second-highest count on the list — for a watch that costs about $175 and that Casio doesn’t list in the US under this reference. Titanium and sapphire at this price is the kind of thing people tell each other about.

Confirmed (Casio Japan): 43.8 × 40 × 9.4mm; 73g; titanium case, bezel and bracelet (clasp fold in stainless steel), one-push three-fold clasp; 5 bar water resistance; Multiband 6 radio (Japan, North America, Europe, China); Tough Solar; sapphire glass with inner anti-reflective coating; bracelet fits 150–205mm; Casio states the bracelet can be adjusted by the user; world time (29 cities); released October 2018.

As a gift. The grown-up choice on this list. A first job, a promotion, a parent who wants one good watch. 5 bar only — not a diver.

8. Casio G-Shock GW-M5610U-1CJF — the classic square

What it is. The 5600-shape G-Shock with Multiband 6 and Tough Solar and the traditional LCD, rather than the newer MIP screen of the GW-BX5600 at number one. Casio describes it as carrying the design of the original 1983 DW-5000C.

Why it sells. It is the plain, proven version of the top seller, at ¥20,832 against ¥30,554. People who want the square G-Shock that sets itself, without the new display, buy this one. The exact reference wasn’t found on Casio’s US site.

Confirmed (Casio Japan): 46.7 × 43.2 × 12.7mm; 52g; resin case, bezel and band; shock-resistant structure; 20 bar water resistance; Multiband 6 radio; Tough Solar; mineral glass; band fits 145–205mm; world time, stopwatch, timer, alarms, full auto LED; released October 2021.

As a gift. For the G-Shock traditionalist, or as the more affordable alternative to the GW-BX5600 in the same box.

9. Casio Wave Ceptor WVA-M630B-3AJF — the 35-gram field watch

What it is. A radio-solar analog-digital watch on a green cloth strap: hands for the time, a small digital window for date and functions. Wave Ceptor is Casio’s radio-solar everyday line, sold mostly in Japan.

Why it sells. Twenty-three ratings — the most on the list — for a ¥13,367 watch that weighs 34.7g, sets itself, and looks like a field watch rather than a gadget.

Confirmed (Casio Japan): 45.1 × 42.1 × 11mm; 34.7g; resin and stainless steel case, cloth and synthetic leather strap; 5 bar water resistance; Multiband 6 radio; Tough Solar; resin glass; strap fits 150–205mm; Neobrite luminous; world time; released February 2013.

As a gift. For a hiker or a commuter who wants a light, no-maintenance watch. The green strap is a style choice; check it suits them.

10. Casio Wave Ceptor WVA-M650D-1A2JF — the steel-bracelet Wave Ceptor

What it is. The same idea on a stainless bracelet: radio-solar, analog hands plus a digital window, 10 bar water resistance, one-push three-fold clasp.

Why it sells. A metal watch that never needs setting or a battery, for ¥22,915. Sixteen ratings on the listing. The reference wasn’t found on Casio’s US site.

Confirmed (Casio Japan): 48.8 × 43.5 × 14.5mm; 95g; resin and stainless steel case, stainless bracelet with one-push three-fold clasp; 10 bar water resistance; Multiband 6 radio; Tough Solar; curved resin glass; bracelet fits 150–205mm; Neobrite; world time, alarms, calendar; released August 2017.

As a gift. For a parent who wants a “real” metal watch without a luxury price. The bracelet will need sizing locally.

The two Seikos, and the Alba

The Seiko Spirit SBTQ045 chronograph (#3), the Alba AQPK401 (#6, out of stock when checked) and the Seiko SND399P chronograph (#7) are on the list, but none of them appears on Seiko’s current Japanese product site, so their specifications couldn’t be confirmed from the maker for this page. They are in the table for completeness. If one interests you, the shop’s listing is the place to check what it is and what it includes.

Before you buy

• Radio signal. Multiband 6 covers Japan, North America, Europe and China. Elsewhere the radio-solar watches run as solar quartz (Casio: about ±15 seconds a month) and are set by hand.
• Size. From 38mm (W-221H) to nearly 50mm (W-S220). Look at what the person wears now.
• Water resistance. 5 bar (W-221H, Lineage, WVA-M630B) is splash and rain; 10 bar (W-S220, WVA-M650D) is swimming; 20 bar (G-Shocks) is more.
• Bracelets. The Lineage’s titanium bracelet is user-adjustable per Casio; the WVA-M650D’s steel bracelet needs a local watch shop.
• “Not found on Casio US.” A snapshot of exact references on 12 September 2026, US only. Casio often sells near-identical watches abroad under other numbers.
• Warranty. Handled in Japan; the shop states you pay round-trip shipping and duties for warranty service. Budget for a local watchmaker.
• Box and wrapping. Maker’s retail box; contents not itemised on the shop’s pages; gift wrapping not listed. Ask.
• Returns. Damaged, defective or incorrect items only, within 7 days with photos. No change-of-mind returns.

How to buy from Japan

Okurimono Japan doesn’t sell anything. “Check Price” takes you to the product page on Discovery Japan Mall, an independent Japanese retailer (not Casio’s or Seiko’s own shop) that ships internationally and shows prices in your currency. You pay them directly by card or PayPal. The shop states orders usually ship within 5 business days with tracking and insurance; customs duties, where charged, are collected on delivery. Prices on this page are the shop’s yen prices on 12 September 2026, converted approximately, before shipping and duty; the live price is on the shop. Full details on How to Buy, and more watches in the Watches category.