Seiko Cal. 6138 - 956

The Seiko 6138-956 represents an important milestone in Seiko's 1975 lineup. Powered by the 6138 caliber with 36j jewels beating at 28,800 bph, it delivers a 72 hours power reserve. [seikata-wm-786d83a62a2c]

Also known as: Sumo, Pogue

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

8.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

160m

Dial Color

Silver

Jewels

36j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1975

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