Seiko Cal. 7156 - 636

The 7156-636 is a sought-after Automatic piece from Seiko's golden era. Powered by the 7156 caliber with 17j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-b9287b253960]

Also known as: Sumo, Sea Horse

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

38mm

Case Thickness

9.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

100m

Dial Color

Navy

Jewels

17j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1990

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