Seiko Cal. 7023 - 640

The Seiko 7023-640 represents an important milestone in Seiko's 1983 lineup. Powered by the 7023 caliber with 24j jewels beating at 28,800 bph, it delivers a 63 hours power reserve. [seikata-wm-a8a6214c0315]

Also known as: Baby Tuna, Emperor

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

37mm

Case Thickness

15.7mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

150m

Dial Color

Green

Jewels

24j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1983

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