Seiko Cal. 5657 - 540

The 5657-540 is a sought-after Solar piece from Seiko's golden era. It features a White dial protected by a Hardlex crystal and offers 190m of water resistance. [seikata-wm-f505e04b08cc]

Also known as: Tuna, Bullhead

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

42mm

Case Thickness

11.5mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

190m

Dial Color

White

Jewels

25j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1968

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