Seiko Cal. 6391 - 270

The 6391-270 is a sought-after Spring Drive piece from Seiko's golden era. It features a Champagne dial protected by a Mineral crystal and offers 70m of water resistance. [seikata-wm-6dee5299371e]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

38mm

Case Thickness

10.6mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

70m

Dial Color

Champagne

Jewels

35j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1973

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