Seiko Cal. 5637 - 870

The 5637-870 is a sought-after Quartz piece from Seiko's golden era. Powered by the 5637 caliber with 26j jewels beating at 28,800 bph, it delivers a 65 hours power reserve. [seikata-wm-2f4cbfda75a0]

Also known as: Sea Horse, Crown

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

38mm

Case Thickness

8.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

110m

Dial Color

Champagne

Jewels

26j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1991

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