Seiko Cal. 6621 - 972

Seiko 6621-972

The 6621-972 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6621 caliber with 29j jewels beating at 36,000 bph, it delivers a 61 hours power reserve. [seikata-wm-4db0cbdfa6b7]

Also known as: Sumo, Bellmatic

Specifications

Movement
Kinetic
Case Material
Hardlex-Coated Steel
Case Width
36mm
Case Thickness
14.7mm
Lug Width
22mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
40m
Dial Color
Burgundy
Jewels
29j
Frequency
36,000 bph
Power Reserve
61 hours
Year
1991

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