Seiko Cal. 6331 - 305

The 6331-305 is a sought-after Kinetic piece from Seiko's golden era. It features a Silver dial protected by a Acrylic crystal and offers 30m of water resistance. [seikata-wm-1f4ebcf06379]

Also known as: Baby Tuna

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

8.8mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Silver

Jewels

20j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1976

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