Seiko
Prospex
SPB103
$850
MSRP
Specifications
Case Diameter
45mm
Lug to Lug
52.6mm
Thickness
12.9mm
Lug Width
20mm
Material
SS
Dial
Green
Movement
automatic
Caliber
6R35
Crystal
Sapphire
Strap
Bracelet
Pricing & Fit Summary
With a lug-to-lug measurement of 52.6mm, this reference is generally recommended for wrist sizes 15.8cm and larger. Note: fit is determined by lug-to-lug distance (52.6mm), not case diameter (45mm).
- 45mm
- Diameter
- 52.6mm
- Lug to Lug
- 12.9mm
- Thickness
- 20mm
- Lug Width
- Caliber
- 6R35
- Movement
- Automatic
- Crystal
- Sapphire
- Case Material
- SS
- Dial
- Green
- Strap
- Bracelet
- MSRP
- $850
- Introduced
- 2019
Perceived Size
How it wears, not just how it measures
~55mm
vs 53mm L2L
Compact (36mm)Substantial (60mm)
↑ 12.9mm case thickness adds +1.9mm wrist presence
Will this fit your wrist?
Slide to your wrist circumference to see the fit diagram.
Wrist circumference17 cm
12cm17cm (avg)22cm