Seiko Cal. 4538 - 240

This Spring Drive model from 1981 features a 40mm Titanium case. With its 20mm lug width and 9.8mm profile, it sits comfortably on most wrists. [seikata-wm-79f228723a4c]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

9.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1981

Related Models

• Seiko 7039-801
• Seiko 7099-309
• Seiko 6398-623
• Seiko 6196-641
• Seiko 6363-544
• Seiko 5638-396
• Seiko 7191-983
• Seiko 5699-374
• Seiko 0718-378
• Seiko 4561-267
• Seiko 4519-719
• Seiko 4413-599