According to the result of conducted survey, MP3 Player (Audio Player) is the preferred device of 65% of the users (between 18-24 years old) because of its compact size and convenient rather than MP4 Player (Audio/Video Player).

It pays respect to its triangular control pad that puts the go in ergonomic. Click the center button to play and pause. Click the outer buttons skip forward and adjust the volume. uPlay is so easy to use, you can control it with one hand, even without looking.

The challenge was to accommodate an OLED screen, the joystick keypad, the PCB and all the other input/output ports.