Seiko Cal. 4523 - 690

The 4523-690 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4523 caliber with 18j jewels beating at 21,600 bph, it delivers a 40 hours power reserve. [seikata-wm-c5cbcd41ba5d]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

40mm

Case Thickness

14.9mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Green

Jewels

18j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1982

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