Seiko Cal. 4460 - 637

The 4460-637 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4460 caliber with 35j jewels beating at 28,800 bph, it delivers a 52 hours power reserve. [seikata-wm-4ace157e7f08]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

38mm

Case Thickness

10.5mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Champagne

Jewels

35j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1988

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