Seiko Cal. 6188 - 740

The 6188-740 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6188 caliber with 29j jewels beating at 28,800 bph, it delivers a 44 hours power reserve. [seikata-wm-4f08f9b3a865]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

39mm

Case Thickness

12.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Champagne

Jewels

29j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1976

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