Seiko Cal. 4487 - 291

Seiko 4487-291

The Seiko 4487-291 represents an important milestone in Seiko's 1972 lineup. The Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-25325e39b945]

Also known as: Bullhead, Sea Horse

Specifications

Movement
Hand-Winding
Case Material
PVD Black
Case Width
37mm
Case Thickness
8.1mm
Lug Width
19mm
Crystal
Hardlex
Bezel
Rotating
Water Resistance
130m
Dial Color
White
Jewels
19j
Frequency
36,000 bph
Power Reserve
47 hours
Year
1972

Related Models

seikata-wm-25325e39b945