Seiko Cal. 5633 - 437

The Seiko 5633-437 represents an important milestone in Seiko's 1987 lineup. It features a Champagne dial protected by a Acrylic crystal and offers 110m of water resistance. [seikata-wm-04ecdcf16479]

Also known as: Bullhead

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

9.4mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Champagne

Jewels

23j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1987

Related Models

• Seiko 7195-316
• Seiko 6387-279
• Seiko 5240-993
• Seiko 4452-635
• Seiko 5236-114
• Seiko 6181-642
• Seiko 6629-640
• Seiko 6261-141
• Seiko 0751-698
• Seiko 6629-618
• Seiko 3826-275
• Seiko 6118-896