Seiko Cal. 4437 - 439

The 4437-439 is a sought-after Automatic piece from Seiko's golden era. Powered by the 4437 caliber with 23j jewels beating at 36,000 bph, it delivers a 53 hours power reserve. [seikata-wm-dba51bd117bc]

Also known as: Tuna, Panda

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

8.3mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Cream

Jewels

23j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1981

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