Seiko Cal. 4420 - 344

The 4420-344 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4420 caliber with 24j jewels beating at 36,000 bph, it delivers a 52 hours power reserve. [seikata-wm-0bb43c25953c]

Also known as: Rally, Silverwave

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

46mm

Case Thickness

11.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Cream

Jewels

24j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1970

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