Seiko Cal. 5647 - 836

The 5647-836 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5647 caliber with 36j jewels beating at 28,800 bph, it delivers a 57 hours power reserve. [seikata-wm-efd8148f1c52]

Also known as: Navigator, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

37mm

Case Thickness

15.1mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

White

Jewels

36j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1979

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