Seiko Cal. 6399 - 618

The 6399-618 is a sought-after Spring Drive piece from Seiko's golden era. It features a Silver dial protected by a Sapphire crystal and offers 30m of water resistance. [seikata-wm-7f38700c56e8]

Also known as: Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

39mm

Case Thickness

9.8mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Silver

Jewels

36j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1975

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