Seiko Cal. 6639 - 427

Seiko 6639-427

This Automatic model from 1967 features a 43mm Titanium case. Powered by the 6639 caliber with 30j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-4b1c127bd612]

Also known as: Arnie

Specifications

Movement
Automatic
Case Material
Titanium
Case Width
43mm
Case Thickness
8.4mm
Lug Width
22mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
110m
Dial Color
Silver
Jewels
30j
Frequency
36,000 bph
Power Reserve
51 hours
Year
1967

Related Models

seikata-wm-4b1c127bd612