Seiko Cal. 5237 - 181

Seiko 5237-181

The 5237-181 is a sought-after Automatic piece from Seiko's golden era. Powered by the 5237 caliber with 30j jewels beating at 21,600 bph, it delivers a 68 hours power reserve. [seikata-wm-ba99a88eb70d]

Also known as: Sumo, World Timer

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
45mm
Case Thickness
15.7mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
100m
Dial Color
Blue Sunburst
Jewels
30j
Frequency
21,600 bph
Power Reserve
68 hours
Year
1967

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