Seiko Cal. 4496 - 540

This Hand-Winding model from 1968 features a 46mm PVD Black case. Powered by the 4496 caliber with 31j jewels beating at 28,800 bph, it delivers a 68 hours power reserve. [seikata-wm-571fd03625c4]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

46mm

Case Thickness

14.4mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

White

Jewels

31j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1968

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