Seiko Cal. 6638 - 798

Seiko 6638-798

This Solar model from 1977 features a 43mm Gold-Plated case. The Bidirectional bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-bbace224a95e]

Also known as: Helmet, Arnie

Specifications

Movement
Solar
Case Material
Gold-Plated
Case Width
43mm
Case Thickness
15.4mm
Lug Width
22mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
170m
Dial Color
Burgundy
Jewels
17j
Frequency
21,600 bph
Power Reserve
45 hours
Year
1977

Related Models

seikata-wm-bbace224a95e