Seiko Cal. 4448 - 609

Seiko 4448-609

The Seiko 4448-609 represents an important milestone in Seiko's 1981 lineup. Powered by the 4448 caliber with 23j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-9969adb2b671]

Also known as: Sumo, UFO

Specifications

Movement
Automatic
Case Material
Two-Tone
Case Width
45mm
Case Thickness
8.5mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
100m
Dial Color
White
Jewels
23j
Frequency
28,800 bph
Power Reserve
71 hours
Year
1981

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