Seiko Cal. 6388 - 633

Seiko 6388-633

The Seiko 6388-633 represents an important milestone in Seiko's 1972 lineup. Powered by the 6388 caliber with 18j jewels beating at 21,600 bph, it delivers a 59 hours power reserve. [seikata-wm-faa120df181e]

Also known as: Sportsmatic, Arnie

Specifications

Movement
Quartz
Case Material
Stainless Steel
Case Width
38mm
Case Thickness
11.5mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Coin-Edge
Water Resistance
30m
Dial Color
Blue Sunburst
Jewels
18j
Frequency
21,600 bph
Power Reserve
59 hours
Year
1972

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