Seiko Cal. 4413 - 642

The 4413-642 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4413 caliber with 23j jewels beating at 21,600 bph, it delivers a 60 hours power reserve. [seikata-wm-c7232a46db2f]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

34mm

Case Thickness

15.1mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

120m

Dial Color

Cream

Jewels

23j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1966

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