Seiko Cal. 6660 - 777

Released in 1997, the Cal. 6660 with design code 777 was part of Seiko's domestic market collection. Powered by the 6660 caliber with 18j jewels beating at 21,600 bph, it delivers a 42 hours power reserve. [seikata-wm-5cb341ae7c25]

Also known as: Sea Horse

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

46mm

Case Thickness

15.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Silver

Jewels

18j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1997

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