Seiko Cal. 7138 - 691

The 7138-691 is a sought-after Quartz piece from Seiko's golden era. Powered by the 7138 caliber with 31j jewels beating at 21,600 bph, it delivers a 54 hours power reserve. [seikata-wm-cfcb3e9c8ab8]

Also known as: Emperor

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

46mm

Case Thickness

9.9mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Burgundy

Jewels

31j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1994

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