Seiko Cal. 6634 - 978

The Seiko 6634-978 represents an important milestone in Seiko's 1995 lineup. Powered by the 6634 caliber with 36j jewels beating at 28,800 bph, it delivers a 58 hours power reserve. [seikata-wm-7c62fc22921a]

Also known as: Bellmatic, Sea Horse

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

13.3mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

190m

Dial Color

Champagne

Jewels

36j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1995

Related Models

• Seiko 6649-769
• Seiko 4446-668
• Seiko 0750-601
• Seiko 5663-195
• Seiko 7195-854
• Seiko 7066-560
• Seiko 7070-523
• Seiko 6356-124
• Seiko 6395-463
• Seiko 6262-859
• Seiko 0729-902
• Seiko 7055-398