Seiko Cal. 3881 - 522

The 3881-522 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 3881 caliber with 31j jewels beating at 28,800 bph, it delivers a 39 hours power reserve. [seikata-wm-4906d0e2dd4f]

Also known as: Helmet, Bellmatic

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

40mm

Case Thickness

8.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Black

Jewels

31j

Frequency

28,800 bph

Power Reserve

39 hours

Year

1991

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