Seiko Cal. 3859 - 745

Seiko 3859-745

This Automatic model from 1977 features a 46mm Hardlex-Coated Steel case. The Bidirectional bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-55a320b9f824]

Also known as: Tuna, Baby Tuna

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
46mm
Case Thickness
14.3mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
200m
Dial Color
Navy
Jewels
31j
Frequency
28,800 bph
Power Reserve
39 hours
Year
1977

Related Models

seikata-wm-55a320b9f824