Seiko Cal. 6639 - 697

Seiko 6639-697

This Solar model from 1977 features a 40mm Hardlex-Coated Steel case. The Fixed bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-3de07850049c]

Also known as: Bullhead

Specifications

Movement
Solar
Case Material
Hardlex-Coated Steel
Case Width
40mm
Case Thickness
13.4mm
Lug Width
22mm
Crystal
Sapphire
Bezel
Fixed
Water Resistance
140m
Dial Color
Navy
Jewels
35j
Frequency
21,600 bph
Power Reserve
42 hours
Year
1977

Related Models

seikata-wm-3de07850049c