Seiko Cal. 6390 - 540

The 6390-540 is a sought-after Solar piece from Seiko's golden era. It features a Silver dial protected by a Sapphire crystal and offers 90m of water resistance. [seikata-wm-192f967c2935]

Also known as: Sumo, Flighty

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

35mm

Case Thickness

15.9mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

90m

Dial Color

Silver

Jewels

19j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1976

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