Seiko Cal. 5657 - 471

This Solar model from 1973 features a 37mm Two-Tone case. It features a Navy dial protected by a Mineral crystal and offers 190m of water resistance. [seikata-wm-67fffebb4a82]

Also known as: Helmet, Baby Tuna

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

37mm

Case Thickness

15.0mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

190m

Dial Color

Navy

Jewels

35j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1973

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