Seiko Cal. 6661 - 683

The Seiko 6661-683 represents an important milestone in Seiko's 1968 lineup. Powered by the 6661 caliber with 23j jewels beating at 28,800 bph, it delivers a 62 hours power reserve. [seikata-wm-15acef44cad0]

Also known as: Turtle, Crown

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

13.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Silver

Jewels

23j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1968

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