Seiko Cal. 6677 - 660

The Seiko 6677-660 represents an important milestone in Seiko's 1968 lineup. Powered by the 6677 caliber with 19j jewels beating at 21,600 bph, it delivers a 50 hours power reserve. [seikata-wm-fc8e5e32d8e8]

Also known as: Turtle, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

37mm

Case Thickness

12.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Blue Sunburst

Jewels

19j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1968

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