Seiko Cal. 7156 - 428

Seiko 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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seikata-wm-7079b50ac844