Seiko Cal. 6339 - 361

Released in 1976, the Cal. 6339 with design code 361 was part of Seiko's domestic market collection. Powered by the 6339 caliber with 18j jewels beating at 28,800 bph, it delivers a 54 hours power reserve. [seikata-wm-62be272bdacf]

Also known as: UFO, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

15.6mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

90m

Dial Color

Cream

Jewels

18j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1976

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