Seiko Cal. 5656 - 270

The 5656-270 is a sought-after Quartz piece from Seiko's golden era. It features a Black dial protected by a Acrylic crystal and offers 40m of water resistance. [seikata-wm-802d3252ad17]

Also known as: Sumo, Sea Horse

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

37mm

Case Thickness

12.0mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Black

Jewels

23j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1965

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