Seiko Cal. 5641 - 860

The Seiko 5641-860 represents an important milestone in Seiko's 1977 lineup. Powered by the 5641 caliber with 23j jewels beating at 28,800 bph, it delivers a 65 hours power reserve. [seikata-wm-ffa7fa24794b]

Also known as: Turtle, Silverwave

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

11.9mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

180m

Dial Color

Navy

Jewels

23j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1977

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