Seiko Cal. 6156 - 556

Released in 1978, the Cal. 6156 with design code 556 was part of Seiko's domestic market collection. With its 18mm lug width and 15.0mm profile, it sits comfortably on most wrists. [seikata-wm-2e3fb2964ddf]

Also known as: UFO

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

15.0mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

110m

Dial Color

Silver

Jewels

20j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1978

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