Seiko Cal. 3866 - 687

Released in 1984, the Cal. 3866 with design code 687 was part of Seiko's domestic market collection. It features a Green dial protected by a Acrylic crystal and offers 170m of water resistance. [seikata-wm-7300a01a288f]

Also known as: Navigator, Baby Tuna

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

46mm

Case Thickness

8.3mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Green

Jewels

31j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1984

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