Seiko Cal. 6687 - 556

The Seiko 6687-556 represents an important milestone in Seiko's 1993 lineup. Powered by the 6687 caliber with 36j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-ae9c4f505133]

Also known as: Turtle, Sportsmatic

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

41mm

Case Thickness

10.1mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Green

Jewels

36j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1993

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