Seiko Cal. 6633 - 561

The 6633-561 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6633 caliber with 36j jewels beating at 28,800 bph, it delivers a 44 hours power reserve. [seikata-wm-b57c66575b6f]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

13.4mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

170m

Dial Color

Champagne

Jewels

36j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1970

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