Seiko Cal. 4521 - 918

This Automatic model from 1976 features a 35mm Stainless Steel case. With its 22mm lug width and 15.3mm profile, it sits comfortably on most wrists. [seikata-wm-4ce35d9f3181]

Also known as: Sumo, Flighty

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

15.3mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

40m

Dial Color

White

Jewels

28j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1976

Related Models

• Seiko 6310-531
• Seiko 3847-600
• Seiko 6233-808
• Seiko 5251-567
• Seiko 6385-740
• Seiko 0774-439
• Seiko 7014-797
• Seiko 7180-185
• Seiko 6353-338
• Seiko 4595-172
• Seiko 6642-328
• Seiko 3867-947