Seiko Cal. 4430 - 777

The 4430-777 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4430 caliber with 19j jewels beating at 21,600 bph, it delivers a 54 hours power reserve. [seikata-wm-aafccdd54e74]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

15.4mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

40m

Dial Color

Green

Jewels

19j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1995

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