Seiko Cal. 4420 - 518

Seiko 4420-518

The Seiko 4420-518 represents an important milestone in Seiko's 1979 lineup. Powered by the 4420 caliber with 21j jewels beating at 21,600 bph, it delivers a 49 hours power reserve. [seikata-wm-243710d42c75]

Also known as: Sumo, Golden Tuna

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
35mm
Case Thickness
13.6mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
60m
Dial Color
Champagne
Jewels
21j
Frequency
21,600 bph
Power Reserve
49 hours
Year
1979

Related Models

seikata-wm-243710d42c75