Seiko Cal. 6642 - 551

This Automatic model from 1981 features a 36mm Gold-Plated case. With its 18mm lug width and 8.0mm profile, it sits comfortably on most wrists. [seikata-wm-a220d0b9998b]

Also known as: Baby Tuna

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

8.0mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Cream

Jewels

28j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1981

Related Models

• Seiko 6192-510
• Seiko 6270-601
• Seiko 0771-202
• Seiko 6138-253
• Seiko 6679-374
• Seiko 4572-588
• Seiko 4460-800
• Seiko 6110-134
• Seiko 0710-628
• Seiko 7094-920
• Seiko 7038-894
• Seiko 7149-168