Seiko Cal. 5680 - 861

The 5680-861 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Black dial protected by a Hardlex crystal and offers 110m of water resistance. [seikata-wm-17eb19b8f511]

Also known as: Bullhead, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

38mm

Case Thickness

11.5mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Black

Jewels

24j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1978

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