Seiko Cal. 4438 - 600

The 4438-600 is a sought-after Solar piece from Seiko's golden era. Powered by the 4438 caliber with 18j jewels beating at 36,000 bph, it delivers a 65 hours power reserve. [seikata-wm-146e1230a43b]

Also known as: Sumo, Crown

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

13.7mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Champagne

Jewels

18j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1983

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