Seiko Cal. 4447 - 637

The Seiko 4447-637 represents an important milestone in Seiko's 1987 lineup. Powered by the 4447 caliber with 29j jewels beating at 36,000 bph, it delivers a 42 hours power reserve. [seikata-wm-6c19754f5985]

Also known as: Pogue, Golden Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

44mm

Case Thickness

9.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

150m

Dial Color

Silver

Jewels

29j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1987

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