Seiko Cal. 6663 - 371

The Seiko 6663-371 represents an important milestone in Seiko's 1966 lineup. It features a White dial protected by a Hardlex crystal and offers 80m of water resistance. [seikata-wm-fe20b1d62203]

Also known as: UFO, Baby Tuna

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

44mm

Case Thickness

9.9mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

White

Jewels

36j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1966

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