Seiko Cal. 5611 - 181

The 5611-181 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5611 caliber with 18j jewels beating at 28,800 bph, it delivers a 60 hours power reserve. [seikata-wm-e16c2f7d56f3]

Also known as: Bellmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

12.0mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

40m

Dial Color

Navy

Jewels

18j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1977

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