Seiko
Prospex
SRPB51
$525
MSRP
Specifications
Case Diameter
43.8mm
Lug to Lug
48.4mm
Thickness
13.4mm
Lug Width
22mm
Material
SS
Dial
Black
Movement
automatic
Caliber
4R35
Crystal
Hardlex
Strap
Bracelet
Pricing & Fit Summary
With a lug-to-lug measurement of 48.4mm, this reference is generally recommended for wrist sizes 14.5cm and larger. Note: fit is determined by lug-to-lug distance (48.4mm), not case diameter (43.8mm).
- 43.8mm
- Diameter
- 48.4mm
- Lug to Lug
- 13.4mm
- Thickness
- 22mm
- Lug Width
- Caliber
- 4R35
- Movement
- Automatic
- Crystal
- Hardlex
- Case Material
- SS
- Dial
- Black
- Strap
- Bracelet
- MSRP
- $525
- Introduced
- 2017
Perceived Size
How it wears, not just how it measures
~50mm
vs 48mm L2L
Compact (36mm)Substantial (60mm)
↑ 13.4mm case thickness adds +2mm wrist presence
Will this fit your wrist?
Slide to your wrist circumference to see the fit diagram.
Wrist circumference17 cm
12cm17cm (avg)22cm
