Seiko Cal. 6646 - 712

The Seiko 6646-712 represents an important milestone in Seiko's 1970 lineup. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 160m of water resistance. [seikata-wm-10ffdd569fa2]

Also known as: Monster, Baby Tuna

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

10.3mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

28j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1970

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