Seiko Cal. 6370 - 406

The Seiko 6370-406 represents an important milestone in Seiko's 1978 lineup. Powered by the 6370 caliber with 28j jewels beating at 21,600 bph, it delivers a 56 hours power reserve. [seikata-wm-47512f0862c6]

Also known as: Sumo, World Timer

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

10.8mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

28j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1978

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