Seiko Cal. 5656 - 657

The 5656-657 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5656 caliber with 35j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-40ad4da462d7]

Also known as: Pogue, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

14.5mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Blue Sunburst

Jewels

35j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1978

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