Seiko Cal. 3837 - 231

Seiko 3837-231

The 3837-231 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 3837 caliber with 21j jewels beating at 21,600 bph, it delivers a 53 hours power reserve. [seikata-wm-88757eaa6b7b]

Also known as: Monster

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
36mm
Case Thickness
13.4mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Inner Rotating
Water Resistance
200m
Dial Color
Burgundy
Jewels
21j
Frequency
21,600 bph
Power Reserve
53 hours
Year
1965

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seikata-wm-88757eaa6b7b