Seiko Cal. 5636 - 978

The Seiko 5636-978 represents an important milestone in Seiko's 1999 lineup. Powered by the 5636 caliber with 31j jewels beating at 36,000 bph, it delivers a 39 hours power reserve. [seikata-wm-4d810465e404]

Also known as: Tuna, Arnie

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

13.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

190m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1999

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