Seiko Cal. 5634 - 420

The Seiko 5634-420 represents an important milestone in Seiko's 1978 lineup. With its 22mm lug width and 10.7mm profile, it sits comfortably on most wrists. [seikata-wm-fb7aebcbb319]

Also known as: Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

42mm

Case Thickness

10.7mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Champagne

Jewels

20j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1978

Related Models

• Seiko 0725-160
• Seiko 6658-885
• Seiko 6631-768
• Seiko 6187-343
• Seiko 6616-130
• Seiko 5613-325
• Seiko 5636-906
• Seiko 7010-362
• Seiko 0766-259
• Seiko 7197-283
• Seiko 5645-367
• Seiko 6264-697