Seiko Cal. 7156 - 428

The 7156-428 is a sought-after Solar piece from Seiko's golden era. Powered by the 7156 caliber with 30j jewels beating at 36,000 bph, it delivers a 45 hours power reserve. [seikata-wm-7079b50ac844]

Also known as: Bullhead, World Timer

Specifications

Movement

Solar

Case Material

Titanium

Case Width

40mm

Case Thickness

10.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1968

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