Seiko Cal. 6687 - 821

The 6687-821 is a sought-after Solar piece from Seiko's golden era. It features a Silver dial protected by a Acrylic crystal and offers 180m of water resistance. [seikata-wm-52328093d518]

Also known as: Tuna, Crown

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

46mm

Case Thickness

10.9mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Silver

Jewels

27j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1988

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