Seiko Cal. 5643 - 641

This Hand-Winding model from 1999 features a 36mm Two-Tone case. Powered by the 5643 caliber with 28j jewels beating at 28,800 bph, it delivers a 60 hours power reserve. [seikata-wm-afb2c026b6c7]

Also known as: Sea Horse, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

36mm

Case Thickness

12.0mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

170m

Dial Color

Cream

Jewels

28j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1999

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