Seiko Cal. 6331 - 799

This Automatic model from 1973 features a 43mm Two-Tone case. Powered by the 6331 caliber with 23j jewels beating at 36,000 bph, it delivers a 55 hours power reserve. [seikata-wm-3d7ec2587020]

Also known as: Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

43mm

Case Thickness

14.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Green

Jewels

23j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1973

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