Seiko Cal. 4431 - 536

The Seiko 4431-536 represents an important milestone in Seiko's 1976 lineup. The Rotating bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-8dacc97ac271]

Also known as: Turtle, Crown

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

15.6mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1976

Related Models

• Seiko 0741-926
• Seiko 0774-561
• Seiko 4512-756
• Seiko 6220-871
• Seiko 6252-578
• Seiko 6185-149
• Seiko 6260-569
• Seiko 5664-627
• Seiko 6110-325
• Seiko 3846-484
• Seiko 6621-577
• Seiko 4596-503