Seiko Cal. 5623 - 330

The 5623-330 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5623 caliber with 30j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-bf65852dfbd9]

Also known as: Tuna, Pogue

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

11.0mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Black

Jewels

30j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1981

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