Seiko Cal. 0740 - 645

Seiko 0740-645

This Automatic model from 1982 features a 41mm Titanium case. With its 21mm lug width and 8.3mm profile, it sits comfortably on most wrists. [seikata-wm-451c71b44772]

Also known as: Baby Tuna

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
41mm
Case Thickness
8.3mm
Lug Width
21mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
50m
Dial Color
Black
Jewels
35j
Frequency
36,000 bph
Power Reserve
59 hours
Year
1982

Related Models

seikata-wm-451c71b44772