TandorioTD254K
Homage to the Seiko Prospex Monster
about$208
Regular price at the brand's own website, checked 1 Nov 2026. Marketplace prices change often.
We may earn a commission from these official stores, at no extra cost to you. It never affects scores or rankings. Affiliate disclosure
The Tandorio TD254K is a homage to the Seiko Prospex Monster, with a 42 mm case, 0.4 mm smaller. It uses an automatic movement and is water resistant to 200 m. Its Resemblance Score is 63 out of 100. It costs about $208 at the official store.
Side by side with the original
Compared with reference SRPD25. Values marked ≈ are estimates, such as a reviewer's measurement.
| Spec | TD254K | Monster (SRPD25) | Difference |
|---|---|---|---|
| Case diameter | 42 mm | 42.4 mm | −0.4 mm |
| Lug-to-lug | 47.7 mm | 49.4 mm | −1.7 mm |
| Thickness | 13.6 mm | 13.4 mm | +0.2 mm |
| Lug width | Not published | 20 mm | Can't compare |
| Water resistance | 200 m | 200 m | |
| Movement | Automatic, NH35A | Automatic, 4R36 | |
| Power reserve | Not published | 41 h | |
| Crystal | Sapphire, aR coating | Mineral, cyclops | |
| Bezel | Not published | Unidirectional rotating | |
| Case material | 316L stainless steel | Stainless steel | |
| Lume | Not published | LumiBrite on hands and index(es) | |
| Bracelet | Steel bracelet or rubber strap, by variant | Stainless steel bracelet | |
| Weight | Not published | 186 g |
The original
Seiko
Monster
Reference SRPD25, prospex automatic diver 200 m, blue dial, steel bracelet
- Case
- 42.4 mm
- Lug-to-lug
- 49.4 mm
- Thickness
- 13.4 mm
- Water resistance
- 200 m
- Movement
- Automatic, 4R36
- List price
- Not published
Why it scores 63
Proportions and movement are computed from specs. Design details and functions are judged from the brand's official images. How we score
Proportions21.8 / 30
- Case diameter10.4 / 120.4 mm apart
- Lug-to-lug2.9 / 81.7 mm apart
- Thickness5.6 / 60.2 mm apart
- Lug width0 / 4Not published, left out
Design signatures19.5 / 40
- Sunken bezel assembly set below the lug tops, with a shroud that extends from the lugs5.5 / 11Wide bezel with shrouding around the crown side; whether it sits below the lug tops is not clear from the images.
- Large arrow-tipped hour hand with arrow-tipped minute and seconds hands4 / 8Arrow-tipped minute hand; the hour hand is a plain paddle and the seconds hand a plain stick.
- Large rectangular hour markers with a shark-tooth style marker at 123.5 / 7Round dots and rectangular markers with a triangle at 12, not a shark-tooth marker.
- Bracelet with solid 20 mm end links that widen straight to 22 mm2.5 / 5Steel bracelet option with solid-looking end links; width not stated.
- Day-date window at 3 o'clock under a cyclops magnifier0 / 4Flat date window without a cyclops; only the date is visible.
- Screw-down crown at 4 o'clock3 / 3Screw-down crown at about 4 o'clock (the brand says 3.8).
- Short, stubby lugs1 / 2Short lugs as part of the shrouded case.
Functions and materials12 / 20
- Complications4 / 8The brand lists day and date; the images show a date only (original: day and date).
- Bezel action2 / 4The brand does not describe the bezel; the images show a bezel with a 60-minute scale.
- Case and bezel materials4 / 4316L steel case, as on the original.
- Crystal shape and date window2 / 4Sapphire with AR coating; the original uses mineral glass.
Movement type10 / 10
- Movement type10 / 10Same movement type.
What reviewers and owners say
We haven't read enough independent reviews of this model to summarise them yet.
Good
- Sapphire crystal with AR coating
- 200 m water resistance
- Arrow hands and crown at 4 as on the original
- Steel bracelet or rubber strap options
Less good
- No cyclops over the date
- 13.6 mm thick
- Lug width and lume type not published
- Resemblance to the original is partial
Compare
Sources
Checked 1 Nov 2026. Every figure on this page comes from one of these pages.