Seiko Cal. 3827 - 805

The 3827-805 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 3827 caliber with 30j jewels beating at 28,800 bph, it delivers a 36 hours power reserve. [seikata-wm-0ea284fbe369]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

34mm

Case Thickness

12.0mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Black

Jewels

30j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1981

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