Seiko Cal. 6634 - 954

The Seiko 6634-954 represents an important milestone in Seiko's 1975 lineup. Powered by the 6634 caliber with 21j jewels beating at 36,000 bph, it delivers a 53 hours power reserve. [seikata-wm-679d1ba5984f]

Also known as: Bullhead

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

44mm

Case Thickness

11.1mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

190m

Dial Color

Champagne

Jewels

21j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1975

Related Models

• Seiko 4562-960
• Seiko 5270-741
• Seiko 6269-407
• Seiko 4477-530
• Seiko 0784-322
• Seiko 6153-696
• Seiko 0745-536
• Seiko 6627-231
• Seiko 4578-409
• Seiko 5268-263
• Seiko 5629-106
• Seiko 0726-395