Seiko Cal. 5641 - 860

Seiko 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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