Seiko Cal. 4448 - 121

The Seiko 4448-121 represents an important milestone in Seiko's 1978 lineup. Powered by the 4448 caliber with 35j jewels beating at 21,600 bph, it delivers a 42 hours power reserve. [seikata-wm-3af16dc0430b]

Also known as: Navigator, Arnie

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

41mm

Case Thickness

15.8mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Silver

Jewels

35j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1978

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