Seiko Cal. 5657 - 639

The 5657-639 is a sought-after Solar piece from Seiko's golden era. It features a Silver dial protected by a Hardlex crystal and offers 80m of water resistance. [seikata-wm-83a6e6d890a4]

Also known as: Panda, Silverwave

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

38mm

Case Thickness

15.5mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Silver

Jewels

25j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1975

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