Seiko Cal. 4537 - 378

Seiko 4537-378

The 4537-378 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4537 caliber with 17j jewels beating at 28,800 bph, it delivers a 53 hours power reserve. [seikata-wm-9205325830a0]

Also known as: Monster, Tuna

Specifications

Movement
Hand-Winding
Case Material
Titanium
Case Width
38mm
Case Thickness
13.4mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
190m
Dial Color
White
Jewels
17j
Frequency
28,800 bph
Power Reserve
53 hours
Year
1974

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seikata-wm-9205325830a0