Seiko Cal. 5645 - 784

This Hand-Winding model from 1976 features a 42mm Two-Tone case. Powered by the 5645 caliber with 30j jewels beating at 21,600 bph, it delivers a 47 hours power reserve. [seikata-wm-ba6ab444afdd]

Also known as: Silverwave, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

42mm

Case Thickness

12.1mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Navy

Jewels

30j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1976

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