Seiko Cal. 6663 - 546

This Hand-Winding model from 1968 features a 46mm Two-Tone case. Powered by the 6663 caliber with 36j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-7d3cebde2581]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

46mm

Case Thickness

14.0mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Black

Jewels

36j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1968

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