Seiko Cal. 7138 - 437

The Seiko 7138-437 represents an important milestone in Seiko's 1984 lineup. Powered by the 7138 caliber with 28j jewels beating at 28,800 bph, it delivers a 63 hours power reserve. [seikata-wm-af6c4da79960]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

10.2mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Navy

Jewels

28j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1984

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