Seiko Cal. 6677 - 638

This Spring Drive model from 1975 features a 46mm Titanium case. It features a Green dial protected by a Hardlex crystal and offers 90m of water resistance. [seikata-wm-ad66f25f91fa]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

46mm

Case Thickness

12.0mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Green

Jewels

22j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1975

Related Models

• Seiko 4432-868
• Seiko 5666-922
• Seiko 6310-780
• Seiko 4483-374
• Seiko 7087-588
• Seiko 0791-933
• Seiko 5222-411
• Seiko 6172-972
• Seiko 4535-679
• Seiko 6212-695
• Seiko 6130-362
• Seiko 6622-684