Best straps for the Seiko Prospex Monster
20 mm lugs, 42.4 mm case, reference SRPD25 (since 2019). Try a strap below; the drawing is to scale.
Strap
Colour: Steel
Strap width20 mm
At the buckle16 mm
Lug to lug49.4 mm
Looks that work on the Seiko Prospex Monster
Seiko Prospex Monster specs
- Made
- since 2019
- Case
- 42.4 mm × 13.4 mm thick
- Lug width
- 20 mm
- Lug to lug
- 49.4 mm
- Case material
- stainless steel
- Movement
- Calibre 4R36, automatic
- Water resistance
- 200 m
- Nickname
- Monster
From the maker's published figures, gathered with AI help and not yet checked against a watch in hand. Measure your lugs before you buy.
Strap size for the Seiko Prospex Monster
What size strap fits the Seiko Prospex Monster?
The Seiko Prospex Monster takes 20 mm straps: its lug width is 20 mm. A leather strap will usually taper to 18 mm at the buckle.
How big is the Seiko Prospex Monster?
The case is 42.4 mm across, and about 49.4 mm from lug tip to lug tip.
What strap looks best on the Seiko Prospex Monster?
Good options are a black rubber strap, a black and grey stripe NATO strap, a taupe suede strap. Try them all on the drawing above.
Sizes come from published specs. Check yours before you buy: how to measure lug width.