Seiko Cal. 5635 - 677

The Seiko 5635-677 represents an important milestone in Seiko's 1972 lineup. Powered by the 5635 caliber with 17j jewels beating at 28,800 bph, it delivers a 58 hours power reserve. [seikata-wm-8e9b09466be2]

Also known as: Bullhead, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

15.0mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

100m

Dial Color

Black

Jewels

17j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1972

Related Models

• Seiko 4579-898
• Seiko 6199-197
• Seiko 7163-944
• Seiko 4491-304
• Seiko 3884-635
• Seiko 6326-772
• Seiko 4497-933
• Seiko 7135-470
• Seiko 4436-863
• Seiko 6217-419
• Seiko 4451-537
• Seiko 6370-260