Seiko Cal. 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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