To quote the site:

"Based on the findings of countless studies both at home and abroad,
highly-specialised devices have been developed over the last few years to
generate magnetic fields which have proven healing properties and to use
coils to transmit these to the body. Well-known scientists have developed
specific programmes to test the effects of particular magnetic fields on
particular illnesses. No harmful influences or lasting side effects have
been found. "

'Countless' studies?  Why not mention a few then?  Which 'well-known'
scientists ?   Excuse my ignorance... ;-)

"The ti-exT Tinnitus Therapy Device harnesses the known principle of
electrostimulation with electromagnetic rays to combat tinnitus."

AFAIK any such radiation that would have any effect whatsoever on such tiny
pick-up surfaces as hair cells would have to be so strong it would be
dangerous.

Nevertheless, this device could well work as a placebo and thus elicit
'results'...

Save your money.

Steve