Seiko Cal. 6391 - 361

The 6391-361 is a sought-after Quartz piece from Seiko's golden era. Powered by the 6391 caliber with 21j jewels beating at 21,600 bph, it delivers a 44 hours power reserve. [seikata-wm-df8189043414]

Also known as: Baby Tuna, Emperor

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

11.1mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

60m

Dial Color

Green

Jewels

21j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1989

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