Seiko Cal. 4477 - 637

The Seiko 4477-637 represents an important milestone in Seiko's 1982 lineup. The Inner Rotating bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-54621c7b44c5]

Also known as: UFO

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

42mm

Case Thickness

10.1mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Champagne

Jewels

17j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1982

Related Models

• Seiko 5223-321
• Seiko 6338-509
• Seiko 6125-397
• Seiko 7136-326
• Seiko 5628-508
• Seiko 5612-401
• Seiko 4439-162
• Seiko 4439-893
• Seiko 7024-513
• Seiko 7084-227
• Seiko 6310-157
• Seiko 6185-421