Seiko Cal. 7156 - 133

Seiko 7156-133

The 7156-133 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 7156 caliber with 20j jewels beating at 21,600 bph, it delivers a 62 hours power reserve. [seikata-wm-32f8ea6b6b46]

Also known as: Bullhead

Specifications

Movement
Hand-Winding
Case Material
Titanium
Case Width
37mm
Case Thickness
12.4mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
180m
Dial Color
White
Jewels
20j
Frequency
21,600 bph
Power Reserve
62 hours
Year
1991

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