Seiko Cal. 5657 - 370

This Solar model from 1994 features a 40mm PVD Black case. It features a Green dial protected by a Hardlex crystal and offers 100m of water resistance. [seikata-wm-66f412bfd689]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

40mm

Case Thickness

15.7mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Green

Jewels

27j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1994

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