Seiko Cal. 5637 - 340

The 5637-340 is a sought-after Quartz piece from Seiko's golden era. Powered by the 5637 caliber with 29j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-9ed96ce5ecdf]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

9.2mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

50m

Dial Color

White

Jewels

29j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1996

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