Seiko Cal. 6363 - 645

The Seiko 6363-645 represents an important milestone in Seiko's 1992 lineup. Powered by the 6363 caliber with 28j jewels beating at 21,600 bph, it delivers a 68 hours power reserve. [seikata-wm-d57d4266e285]

Also known as: Sumo, Golden Tuna

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

37mm

Case Thickness

11.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Black

Jewels

28j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1992

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