Seiko Cal. 7133 - 331

The 7133-331 is a sought-after Spring Drive piece from Seiko's golden era. It features a Burgundy dial protected by a Mineral crystal and offers 30m of water resistance. [seikata-wm-a3c34ec02235]

Also known as: Helmet, Flighty

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

9.4mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Burgundy

Jewels

35j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1976

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