Seiko Cal. 4438 - 336

Seiko 4438-336

This Spring Drive model from 1970 features a 45mm Stainless Steel case. Powered by the 4438 caliber with 17j jewels beating at 36,000 bph, it delivers a 59 hours power reserve. [seikata-wm-37fadbf1e950]

Also known as: Sumo, Arnie

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
45mm
Case Thickness
10.4mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Coin-Edge
Water Resistance
150m
Dial Color
Black
Jewels
17j
Frequency
36,000 bph
Power Reserve
59 hours
Year
1970

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seikata-wm-37fadbf1e950