Seiko Cal. 4437 - 850

Seiko 4437-850

The 4437-850 is a sought-after Quartz piece from Seiko's golden era. Powered by the 4437 caliber with 29j jewels beating at 21,600 bph, it delivers a 58 hours power reserve. [seikata-wm-bd4c09039b02]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement
Quartz
Case Material
Stainless Steel
Case Width
39mm
Case Thickness
10.6mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
110m
Dial Color
Blue Sunburst
Jewels
29j
Frequency
21,600 bph
Power Reserve
58 hours
Year
1969

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seikata-wm-bd4c09039b02