Seiko Cal. 6638 - 924

The Seiko 6638-924 represents an important milestone in Seiko's 1968 lineup. It features a Black dial protected by a Mineral crystal and offers 200m of water resistance. [seikata-wm-9547aa547231]

Also known as: Monster, Golden Tuna

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

14.8mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

200m

Dial Color

Black

Jewels

35j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1968

Related Models

• Seiko 4575-594
• Seiko 3831-860
• Seiko 6344-603
• Seiko 7160-332
• Seiko 7024-159
• Seiko 4544-754
• Seiko 6172-645
• Seiko 5634-662
• Seiko 4582-220
• Seiko 6379-388
• Seiko 7083-327
• Seiko 6354-132