Seiko Cal. 4427 - 978

This Quartz model from 1978 features a 45mm Hardlex-Coated Steel case. Powered by the 4427 caliber with 24j jewels beating at 36,000 bph, it delivers a 54 hours power reserve. [seikata-wm-cb4684fe2352]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

13.0mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Black

Jewels

24j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1978

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