Seiko Cal. 6656 - 378

The Seiko 6656-378 represents an important milestone in Seiko's 1975 lineup. It features a White dial protected by a Sapphire crystal and offers 120m of water resistance. [seikata-wm-41404d2d6a23]

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

38mm

Case Thickness

12.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

White

Jewels

32j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1975

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