Seiko Cal. 5640 - 261

Seiko 5640-261

This Automatic model from 1966 features a 40mm Titanium case. The Coin-Edge bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-d402b1105670]

Also known as: World Timer

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
40mm
Case Thickness
13.3mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
190m
Dial Color
Navy
Jewels
36j
Frequency
21,600 bph
Power Reserve
56 hours
Year
1966

Related Models

seikata-wm-d402b1105670