Seiko Cal. 6221 - 387

Seiko 6221-387

The 6221-387 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6221 caliber with 27j jewels beating at 28,800 bph, it delivers a 59 hours power reserve. [seikata-wm-e6bf4838b7cb]

Also known as: Sumo, Bellmatic

Specifications

Movement
Automatic
Case Material
PVD Black
Case Width
39mm
Case Thickness
13.1mm
Lug Width
18mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
80m
Dial Color
Black
Jewels
27j
Frequency
28,800 bph
Power Reserve
59 hours
Year
1972

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