Seiko Cal. 5637 - 838

The Seiko 5637-838 represents an important milestone in Seiko's 1982 lineup. It features a Navy dial protected by a Acrylic crystal and offers 170m of water resistance. [seikata-wm-4ed1dec2d18e]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

39mm

Case Thickness

12.2mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

170m

Dial Color

Navy

Jewels

28j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1982

Related Models

• Seiko 6158-468
• Seiko 6224-525
• Seiko 7175-679
• Seiko 0723-790
• Seiko 6124-490
• Seiko 5271-164
• Seiko 4495-650
• Seiko 4455-383
• Seiko 3834-323
• Seiko 0767-703
• Seiko 4599-455
• Seiko 6124-200