Seiko Cal. 6390 - 686

Released in 1987, the Cal. 6390 with design code 686 was part of Seiko's domestic market collection. Powered by the 6390 caliber with 30j jewels beating at 21,600 bph, it delivers a 62 hours power reserve. [seikata-wm-86bf273daff0]

Also known as: Rally, Golden Tuna

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

11.8mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Silver

Jewels

30j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1987

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