German owned, there is no official Website
It seems that there was some
cooperation once between JARDENA and Citizen Germany. I found this watch in a
watch chain called Christ in Switzerland. Citizen Germany obviously had shares
of Christ too. Later the discount drug-store Douglas took over Christ. I do not
know whether Citizen Germany is still a shareholder of the German Brand Jardena.
It seems that Jardena is not producing watches anymore (time of writing 2013).
Please note that I have corrected the caliber to ETA (Valjoux) 7750. It was previously stated wrongly as 7751 and this still shows in the file names which I did not change.