Seiko Cal. 5656 - 478

Seiko 5656-478

This Automatic model from 1991 features a 37mm Hardlex-Coated Steel case. The Bidirectional bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-9780146edab9]

Also known as: Tuna, World Timer

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
37mm
Case Thickness
14.5mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Bidirectional
Water Resistance
160m
Dial Color
Navy
Jewels
27j
Frequency
21,600 bph
Power Reserve
56 hours
Year
1991

Related Models

seikata-wm-9780146edab9