Seiko Cal. 4498 - 631

Seiko 4498-631

Released in 1979, the Cal. 4498 with design code 631 was part of Seiko's domestic market collection. Powered by the 4498 caliber with 36j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-23915fe0e89f]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement
Solar
Case Material
Hardlex-Coated Steel
Case Width
34mm
Case Thickness
10.6mm
Lug Width
21mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
30m
Dial Color
Silver
Jewels
36j
Frequency
21,600 bph
Power Reserve
71 hours
Year
1979

Related Models

seikata-wm-23915fe0e89f