Seiko Cal. 5678 - 544

This Hand-Winding model from 1970 features a 42mm Two-Tone case. Powered by the 5678 caliber with 27j jewels beating at 28,800 bph, it delivers a 64 hours power reserve. [seikata-wm-af961f5b69a7]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

42mm

Case Thickness

15.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Burgundy

Jewels

27j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1970

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