Seiko Cal. 6311 - 884

This Hand-Winding model from 1971 features a 41mm PVD Black case. Powered by the 6311 caliber with 18j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-2f2fdba874be]

Also known as: Bellmatic

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

41mm

Case Thickness

12.0mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Silver

Jewels

18j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1971

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