Seiko Cal. 5631 - 778

This Quartz model from 1988 features a 43mm Stainless Steel case. With its 20mm lug width and 15.2mm profile, it sits comfortably on most wrists. [seikata-wm-2062166ef75c]

Also known as: Arnie

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

15.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Silver

Jewels

21j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1988

Related Models

• Seiko 5621-752
• Seiko 6197-352
• Seiko 0778-630
• Seiko 6120-576
• Seiko 6169-919
• Seiko 6343-703
• Seiko 6315-255
• Seiko 6176-339
• Seiko 6215-539
• Seiko 0725-871
• Seiko 4498-597
• Seiko 6690-621