Seiko Cal. 4480 - 950

Seiko 4480-950

The Seiko 4480-950 represents an important milestone in Seiko's 1970 lineup. Powered by the 4480 caliber with 21j jewels beating at 36,000 bph, it delivers a 45 hours power reserve. [seikata-wm-ca1006b1db00]

Also known as: Sumo

Specifications

Movement
Hand-Winding
Case Material
PVD Black
Case Width
46mm
Case Thickness
10.7mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Bidirectional
Water Resistance
130m
Dial Color
Green
Jewels
21j
Frequency
36,000 bph
Power Reserve
45 hours
Year
1970

Related Models

seikata-wm-ca1006b1db00