Seiko Cal. 0730 - 660

The Seiko 0730-660 represents an important milestone in Seiko's 1981 lineup. Powered by the 0730 caliber with 31j jewels beating at 28,800 bph, it delivers a 52 hours power reserve. [seikata-wm-2ce57c7f018e]

Also known as: Crown

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

42mm

Case Thickness

12.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

170m

Dial Color

White

Jewels

31j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1981

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