Seiko Cal. 5681 - 665

The 5681-665 is a sought-after Solar piece from Seiko's golden era. Powered by the 5681 caliber with 29j jewels beating at 21,600 bph, it delivers a 44 hours power reserve. [seikata-wm-4fa931207d2a]

Also known as: Emperor

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

13.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Cream

Jewels

29j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1975

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