Seiko Cal. 4420 - 680

This Quartz model from 1980 features a 35mm Hardlex-Coated Steel case. Powered by the 4420 caliber with 31j jewels beating at 36,000 bph, it delivers a 46 hours power reserve. [seikata-wm-e504ff80ab40]

Also known as: Crown, Baby Tuna

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

8.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1980

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