Seiko Cal. 4437 - 693

Seiko 4437-693

The 4437-693 is a sought-after Solar piece from Seiko's golden era. Powered by the 4437 caliber with 36j jewels beating at 36,000 bph, it delivers a 46 hours power reserve. [seikata-wm-1a2d994bbfe4]

Also known as: Crown, Baby Tuna

Specifications

Movement
Solar
Case Material
PVD Black
Case Width
39mm
Case Thickness
13.3mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Rotating
Water Resistance
110m
Dial Color
Blue Sunburst
Jewels
36j
Frequency
36,000 bph
Power Reserve
46 hours
Year
1974

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