Seiko Cal. 5677 - 780

The 5677-780 is a sought-after Hand-Winding piece from Seiko's golden era. With its 18mm lug width and 8.2mm profile, it sits comfortably on most wrists. [seikata-wm-89e93fa90e03]

Also known as: UFO, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

44mm

Case Thickness

8.2mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

40m

Dial Color

Navy

Jewels

21j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1966

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