Seiko Cal. 4540 - 441

Seiko 4540-441

This Automatic model from 1979 features a 38mm Stainless Steel case. It features a Navy dial protected by a Mineral crystal and offers 90m of water resistance. [seikata-wm-7c82c490ace3]

Also known as: Monster, Bullhead

Specifications

Movement
Automatic
Case Material
Stainless Steel
Case Width
38mm
Case Thickness
11.2mm
Lug Width
20mm
Crystal
Mineral
Bezel
Bidirectional
Water Resistance
90m
Dial Color
Navy
Jewels
20j
Frequency
36,000 bph
Power Reserve
62 hours
Year
1979

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