Seiko Cal. 5634 - 851

The Seiko 5634-851 represents an important milestone in Seiko's 1969 lineup. With its 20mm lug width and 14.3mm profile, it sits comfortably on most wrists. [seikata-wm-fec1d375ce4e]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

39mm

Case Thickness

14.3mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

150m

Dial Color

Champagne

Jewels

33j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1969

Related Models

• Seiko 4442-340
• Seiko 5644-169
• Seiko 6235-614
• Seiko 7192-901
• Seiko 6163-227
• Seiko 4542-626
• Seiko 6610-669
• Seiko 6364-813
• Seiko 3865-647
• Seiko 6345-999
• Seiko 6323-590
• Seiko 5693-500