Seiko Cal. 6621 - 154

Seiko 6621-154

The 6621-154 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6621 caliber with 30j jewels beating at 21,600 bph, it delivers a 44 hours power reserve. [seikata-wm-eb3c2f173051]

Also known as: Sumo, Bellmatic

Specifications

Movement
Spring Drive
Case Material
Stainless Steel
Case Width
46mm
Case Thickness
13.7mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
100m
Dial Color
Burgundy
Jewels
30j
Frequency
21,600 bph
Power Reserve
44 hours
Year
1967

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seikata-wm-eb3c2f173051