Seiko Cal. 7057 - 406

The Seiko 7057-406 represents an important milestone in Seiko's 1993 lineup. It features a Green dial protected by a Sapphire crystal and offers 30m of water resistance. [seikata-wm-50dc087a730d]

Also known as: Helmet, Sportsmatic

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

44mm

Case Thickness

12.5mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Green

Jewels

18j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1993

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