Seiko Watches 44mm & Larger
66 Seiko models in the 44mm and up range, actually measuring 44mm to 51.7mm. Bold, high-presence sizing best on larger wrists.
Thickness barely moves across the group — 13.5mm to 14.7mm — so these wear much alike under a cuff.
49 are round and 17 rectangular — at the same nominal width, a rectangular case covers noticeably more wrist.
Releases run from 2015 to 2023, so this mixes current models with older references.
Which of these fits your wrist?
Roughly a 14.7cm wrist circumference — the measurement a tape gives you. Compared against lug-to-lug where we have it, case width otherwise.
66 of 66 models sit on this wrist without the lugs hanging over the edge.
| Model | Your Fit | Width | |
|---|---|---|---|
| Prospex Sky SSC351P1 Stainless Steel / Black | Balanced5.5mm clear | 44mm | |
| Prospex Sky SSC347P1 Stainless Steel / Blue | Balanced5.5mm clear | 44mm | |
| Prospex Sky SSC349P1 Stainless Steel / Black | Balanced5.5mm clear | 44mm | |
| Prospex Sky SSC423P1 Stainless Steel / Black | Balanced5.5mm clear | 44mm | |
| Prospex Sky SSC419P1 Stainless Steel / Black | Balanced5.5mm clear | 44mm | |
| Prospex Sky SSC425P1 Stainless Steel / Cream | Balanced5.5mm clear | 44mm | |
| Prospex Sky SSC353P1 Stainless Steel / Black | Balanced5.5mm clear | 44mm | |
| Prospex Sky SSC421P1 Stainless Steel / Black | Balanced5.5mm clear | 44mm | |
| Prospex Diver Marinemaster 300 Stainless Steel / Black / Bracelet | Balanced5.4mm clear | 44.3mm | |
| Prospex Diver SSC487P1 Stainless Steel / Black | Balanced5.2mm clear | 44.6mm | |
| Prospex Diver SSC489P1 Stainless Steel / Blue | Balanced5.2mm clear | 44.6mm | |
| Prospex Diver SSC551P1 Stainless Steel / Blue | Balanced5.2mm clear | 44.6mm | |
| Prospex Diver SSC485P1 Stainless Steel / Blue | Balanced5.2mm clear | 44.6mm | |
| Prospex Diver SSC549P1 Stainless Steel / Blue | Balanced5.2mm clear | 44.6mm | |
| Prospex Sky SRPB59K1 Stainless Steel / Cream | Balanced5.1mm clear | 44.7mm | |
| Prospex Sky SRPB57K1 Stainless Steel / Black | Balanced5.1mm clear | 44.7mm | |
| Prospex Sky SRPB61K1 Stainless Steel / Black | Balanced5.1mm clear | 44.7mm | |
| Prospex Diver Turtle Thong Sia Exclusive | Balanced5.0mm clear | 45mm | |
| Prospex Diver Turtle Stainless Steel / Blue / Bracelet / Save the Ocean | Balanced5.0mm clear | 45mm | |
| Prospex Diver Turtle Goldtone / Black / Rubber | Balanced5.0mm clear | 45mm | |
| Prospex Sky SSG015P1 Stainless Steel / Black | Balanced5.0mm clear | 45mm | |
| Prospex Diver Turtle Stainless Steel / Grey / Bracelet | Balanced5.0mm clear | 45mm | |
| Prospex Diver Turtle Stainless Steel / Black / Black Series | Balanced5.0mm clear | 45mm | |
| Prospex Diver Turtle Stainless Steel / Grey / Bracelet / Zimbe | Balanced5.0mm clear | 45mm | |
| Prospex Diver Turtle Stainless Steel / Blue Gradient / Bracelet | Balanced5.0mm clear | 45mm | |
| Prospex Diver Turtle Stainless Steel / Blue Lagoon / Bracelet | Balanced5.0mm clear | 45mm | |
| Prospex Sky SSC611P1 Stainless Steel / Blue | Balanced5.0mm clear | 45mm | |
| Prospex Sky SSG011P1 Stainless Steel / Black | Balanced5.0mm clear | 45mm | |
| Prospex Sky SSG013P1 Stainless Steel / Black | Balanced5.0mm clear | 45mm | |
| Prospex Sky SSC609P1 Stainless Steel / Blue | Balanced5.0mm clear | 45mm | |
| Prospex Sky SSC607P1 Stainless Steel / Black | Balanced5.0mm clear | 45mm | |
| Prospex Diver Turtle Stainless Steel / Blue / Bracelet / Padi | Balanced5.0mm clear | 45mm | |
| Prospex Diver Turtle Stainless Steel / Black / Bracelet / Batman | Balanced5.0mm clear | 45mm | |
| Prospex Diver Turtle Stainless Steel / Black / Bracelet / Coke | Balanced5.0mm clear | 45mm | |
| Prospex Diver Trans Ocean Stainless Steel / Black / Bracelet | Balanced5.0mm clear | 45mm | |
| Prospex Diver Turtle Stainless Steel / Green / Bracelet | Balanced5.0mm clear | 45mm | |
| Prospex Diver Trans Ocean Stainless Steel / Blue / Bracelet | Balanced5.0mm clear | 45mm | |
| Prospex Diver Turtle Stainless Steel / Black / Rubber / Pepsi | Balanced5.0mm clear | 45mm | |
| Prospex Diver Turtle Stainless Steel / Black / Bracelet | Balanced5.0mm clear | 45mm | |
| Prospex Diver Turtle Stainless Steel / Blue / Bracelet | Balanced5.0mm clear | 45mm | |
| Prospex Diver Turtle Stainless Steel / Black / Rubber | Balanced5.0mm clear | 45mm | |
| Prospex Diver SBDX014G Titanium / Black | Balanced5.0mm clear | 45mm | |
| Prospex Land SUN049P1 Stainless Steel / Black / Bracelet | Balanced4.7mm clear | 45.6mm | |
| Prospex Land SUN049P2 Stainless Steel / Black / Strap | Balanced4.7mm clear | 45.6mm | |
| Prospex Land SNE421P1 Stainless Steel / Black / Bracelet | Balanced4.7mm clear | 45.6mm | |
| Prospex Land SUN061P1 Stainless Steel / Brown / Strap | Balanced4.7mm clear | 45.6mm | |
| Prospex Land SUN053P1 Stainless Steel / Black / Strap | Balanced4.7mm clear | 45.6mm | |
| Prospex Land SNE425P1 Stainless Steel / Black / Strap | Balanced4.7mm clear | 45.6mm | |
| Prospex Land SUN051P1 Stainless Steel / Green / Strap | Balanced4.7mm clear | 45.6mm | |
| Prospex Land SUN059P2 Stainless Steel / Blue / Strap | Balanced4.7mm clear | 45.6mm | |
| Prospex Land SUN047P1 Stainless Steel / Black / Bracelet | Balanced4.7mm clear | 45.6mm | |
| Prospex Land SNE423P1 Stainless Steel / Black / Strap | Balanced4.7mm clear | 45.6mm | |
| Prospex Sky SSC261P1 Stainless Steel / Black | Balanced4.4mm clear | 46.1mm | |
| Prospex Landmaster Stainless Steel / Black / Bracelet | Balanced4.1mm clear | 46.7mm | |
| Prospex Diver SUN065P1 Stainless Steel / Blue | Sweet spot3.8mm clear | 47.5mm | |
| Prospex Diver SUN019P1 Stainless Steel / Black | Sweet spot3.8mm clear | 47.5mm | |
| Prospex Diver SUN021P1 Stainless Steel / Black | Sweet spot3.8mm clear | 47.5mm | |
| Seiko Prospex Divers Marinemaster 300 Ninja Tuna | Sweet spot3.6mm clear | 47.7mm | |
| Prospex Sky SSG005P1 Stainless Steel / Black | Sweet spot3.6mm clear | 47.8mm | |
| Prospex Sky SSG003P1 Stainless Steel / Black | Sweet spot3.6mm clear | 47.8mm |
Same size, other brands
The middle of this group sits around 45mm. These are the closest matches we hold from other brands — useful when the size is right but the Seiko isn't.

OnePlus
Watch Lite
45mm · 8.9mm thick

Garmin
D2 Air X15
45mm · 12.5mm thick

Oppo
Watch S
45mm · 8.9mm thick
Pixel Watch 4 - 45mm
45mm · 12.3mm thick

Tissot
T-Race Chronograph PVD / Black / Rubber
45mm · 11.8mm thick

Zenith
Defy Extreme Chroma Black
45mm · 14.5mm thick

Motorola
Moto Watch 120
44.6mm · 11mm thick
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Certina
DS Action Diver Chrono Stainless Steel / Black / Bracelet
44.6mm · 16.17mm thick