Seiko Cal. 6643 - 768

This Hand-Winding model from 1987 features a 46mm Gold-Plated case. Powered by the 6643 caliber with 17j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-4f0cad4d4839]

Also known as: Turtle, Monster

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

12.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

17j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1987

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