Seiko Cal. 6621 - 635

Seiko 6621-635

The 6621-635 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6621 caliber with 23j jewels beating at 28,800 bph, it delivers a 38 hours power reserve. [seikata-wm-7f02bd88ab8d]

Also known as: Baby Tuna, Flighty

Specifications

Movement
Automatic
Case Material
Hardlex-Coated Steel
Case Width
42mm
Case Thickness
13.6mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
130m
Dial Color
Navy
Jewels
23j
Frequency
28,800 bph
Power Reserve
38 hours
Year
1965

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