Seiko Cal. 7138 - 788

The 7138-788 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 7138 caliber with 23j jewels beating at 28,800 bph, it delivers a 43 hours power reserve. [seikata-wm-bf7cbb8785cf]

Also known as: Emperor, Flighty

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

13.9mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Champagne

Jewels

23j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1971

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