Seiko Cal. 5228 - 507

The 5228-507 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5228 caliber with 27j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-9211522f5875]

Also known as: Helmet, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

39mm

Case Thickness

15.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

40m

Dial Color

Burgundy

Jewels

27j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1976

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