Seiko Cal. 6138 - 721

The Seiko 6138-721 represents an important milestone in Seiko's 1969 lineup. Powered by the 6138 caliber with 32j jewels beating at 21,600 bph, it delivers a 65 hours power reserve. [seikata-wm-c336578dc581]

Also known as: Sportsmatic, Bellmatic

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

10.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Navy

Jewels

32j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1969

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