Seiko Cal. 6390 - 285

This Automatic model from 1992 features a 39mm Titanium case. Powered by the 6390 caliber with 22j jewels beating at 21,600 bph, it delivers a 46 hours power reserve. [seikata-wm-1d6ab3256ef9]

Also known as: Tuna, Bellmatic

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

39mm

Case Thickness

8.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Green

Jewels

22j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1992

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