Seiko Cal. 4491 - 155

Seiko 4491-155

This Hand-Winding model from 1977 features a 38mm Stainless Steel case. Powered by the 4491 caliber with 32j jewels beating at 36,000 bph, it delivers a 58 hours power reserve. [seikata-wm-db799efd4a9c]

Also known as: Helmet, World Timer

Specifications

Movement
Hand-Winding
Case Material
Stainless Steel
Case Width
38mm
Case Thickness
11.4mm
Lug Width
20mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
30m
Dial Color
Champagne
Jewels
32j
Frequency
36,000 bph
Power Reserve
58 hours
Year
1977

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