Seiko Cal. 4480 - 765

The Seiko 4480-765 represents an important milestone in Seiko's 1966 lineup. Powered by the 4480 caliber with 27j jewels beating at 21,600 bph, it delivers a 57 hours power reserve. [seikata-wm-114567dbf66e]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

13.2mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

140m

Dial Color

White

Jewels

27j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1966

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