Seiko Cal. 6633 - 728

The 6633-728 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6633 caliber with 27j jewels beating at 28,800 bph, it delivers a 43 hours power reserve. [seikata-wm-93f2bb4ce114]

Also known as: Golden Tuna

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

46mm

Case Thickness

14.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

80m

Dial Color

Champagne

Jewels

27j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1966

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