Seiko Cal. 6316 - 557

Released in 1979, the Cal. 6316 with design code 557 was part of Seiko's domestic market collection. With its 21mm lug width and 10.2mm profile, it sits comfortably on most wrists. [seikata-wm-4aaca4bb0959]

Also known as: Helmet, UFO

Specifications

Movement

Solar

Case Material

Titanium

Case Width

38mm

Case Thickness

10.2mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

180m

Dial Color

Cream

Jewels

27j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1979

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