Seiko Cal. 6391 - 650

Released in 1987, the Cal. 6391 with design code 650 was part of Seiko's domestic market collection. It features a Green dial protected by a Mineral crystal and offers 180m of water resistance. [seikata-wm-d3882e4d1829]

Also known as: UFO

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

44mm

Case Thickness

8.0mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

180m

Dial Color

Green

Jewels

21j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1987

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