Seiko Cal. 7057 - 237

This Hand-Winding model from 1978 features a 40mm Two-Tone case. It features a Black dial protected by a Sapphire crystal and offers 30m of water resistance. [seikata-wm-4550161f838b]

Also known as: Monster, Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

40mm

Case Thickness

12.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Black

Jewels

18j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1978

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