Seiko Cal. 7157 - 471

Released in 1974, the Cal. 7157 with design code 471 was part of Seiko's domestic market collection. It features a Green dial protected by a Mineral crystal and offers 50m of water resistance. [seikata-wm-cfb9cfd392c6]

Also known as: Helmet, Arnie

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

11.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Green

Jewels

20j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1974

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