Seiko Cal. 5287 - 728

The 5287-728 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5287 caliber with 24j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-013f814c3e30]

Also known as: Helmet, World Timer

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

35mm

Case Thickness

10.0mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Burgundy

Jewels

24j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1979

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