Seiko Cal. 4449 - 820

The 4449-820 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4449 caliber with 28j jewels beating at 36,000 bph, it delivers a 36 hours power reserve. [seikata-wm-9f99e9d1329c]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

14.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

150m

Dial Color

White

Jewels

28j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1969

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