Seiko Cal. 4438 - 878

The 4438-878 is a sought-after Solar piece from Seiko's golden era. Powered by the 4438 caliber with 20j jewels beating at 36,000 bph, it delivers a 53 hours power reserve. [seikata-wm-efe29689a075]

Also known as: Sportsmatic

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

10.9mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Burgundy

Jewels

20j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1973

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