Seiko Cal. 7156 - 507

The Seiko 7156-507 represents an important milestone in Seiko's 1994 lineup. Powered by the 7156 caliber with 28j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-846d82170783]

Also known as: Bullhead

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

15.3mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

130m

Dial Color

Burgundy

Jewels

28j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1994

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