Seiko Cal. 7156 - 331

The 7156-331 is a sought-after Automatic piece from Seiko's golden era. Powered by the 7156 caliber with 28j jewels beating at 36,000 bph, it delivers a 63 hours power reserve. [seikata-wm-40b00517a610]

Also known as: Samurai, Crown

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

8.4mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Green

Jewels

28j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1994

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