Seiko Cal. 6647 - 310

Released in 1971, the Cal. 6647 with design code 310 was part of Seiko's domestic market collection. It features a Silver dial protected by a Sapphire crystal and offers 70m of water resistance. [seikata-wm-fb13cd80aa98]

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

13.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

70m

Dial Color

Silver

Jewels

34j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1971

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