Hi @rcentros! Thank you for your reply!
The Pyrus is a great reader: similar to the K4NT black but with an anti-skid surface and more comfortable feeling in hand. The downside is the firmware.
I already opened it last night when it broke but my boyfriend told me sadly there's nothing to do
(the power button broke from the electrical contacts attached)
Yes, before posting I read about the Sony and I searched the web for some offer but... I don't really like it much.