Seiko Cal. 0777 - 123

The 0777-123 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 0777 caliber with 23j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-8523a1293d1f]

Also known as: Monster, Sumo

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

39mm

Case Thickness

9.0mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Burgundy

Jewels

23j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1981

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