Seiko Cal. 5656 - 366

The 5656-366 is a sought-after Spring Drive piece from Seiko's golden era. The Bidirectional bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-f4189733a4b5]

Also known as: Sportsmatic, Emperor

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

10.2mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Silver

Jewels

30j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1989

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