The Home/Back and Pwr/Off are far too small and fiddly. To only be able to charge the unit via a USB port linked to a PC/Mac or laptop is ridiculous. You should supply a mains charger or at least have one available as an extra. These are supposed to be portable devices. My old NWZ- S765 beats this more expensive model hands down on both of these accounts

Purchased to replace my old Ipod classic which had finally died. Wanted something small with large memory and with the ability to use Hi Res. So far quite impressed.

Purchased just after Christmas and I am delighted with the quality of the unit and sound reproduction particularly via my Sony bluetooth wireless speaker ie SRS-XB3.