Seiko Cal. 6621 - 938

This Spring Drive model from 1982 features a 46mm Two-Tone case. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 30m of water resistance. [seikata-wm-9155359f1275]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

46mm

Case Thickness

14.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

17j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1982

Related Models

• Seiko 3865-250
• Seiko 6116-230
• Seiko 4563-748
• Seiko 7099-685
• Seiko 6635-793
• Seiko 3849-820
• Seiko 0775-861
• Seiko 5690-502
• Seiko 6652-531
• Seiko 6149-517
• Seiko 4423-924
• Seiko 4464-197