Seiko Cal. 4576 - 306

The Seiko 4576-306 represents an important milestone in Seiko's 1969 lineup. With its 20mm lug width and 10.0mm profile, it sits comfortably on most wrists. [seikata-wm-3af2d2990c78]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

40mm

Case Thickness

10.0mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Silver

Jewels

31j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1969

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