Seiko Cal. 6370 - 630

The Seiko 6370-630 represents an important milestone in Seiko's 1999 lineup. Powered by the 6370 caliber with 19j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-a50b9e411d3b]

Also known as: Sumo, Flighty

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

10.5mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

19j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1999

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