Can wake up the PSP2000 console when it is asleep
Remote control IC would auto-sleep accompanying the PSP2000 console to reduce the consumption
Supports Skype's voice communication
Round keys will give you good control sense, easy to use
Work current: 0.7 to 1mA
Work voltage: 1.8 to 3.3V

Using methods
Press "NEXT" button once to turn the next song
Press "PREV" button once to go back at the start of current song
Press "PLAY/PAUSE" button once to shift between play and pause
When the "HOLD" key is on you can't use the other keys
Clip on the back can be used on collar or chest
Skype's work: use Skype on PSP2000