Seiko Cal. 4513 - 639

The 4513-639 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4513 caliber with 30j jewels beating at 21,600 bph, it delivers a 39 hours power reserve. [seikata-wm-cf460ffd679b]

Also known as: Turtle, Bullhead

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

40mm

Case Thickness

8.1mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

60m

Dial Color

Silver

Jewels

30j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1986

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