The Mitsubishi D904i is a part of the Foma 904i series, the slider has a 2.8 inch QVGA display (240 x 400) showing 260,000 colors, 3.2 Megapixel camera, Micro SD card slot for memory expansion, GPS and full HTML browser. However this is what you would expect from any high end phone, the D904i's specialty is the built in six axis motion sensors, which means it can detect incination, revolution and horizontal displacement. Not only can you play games using the sensors but also take control over applications, for eg - when browsing for scrolling all you need to do is tilt the mouse in the respective direction, same goes for MP3 player where you can change the track by shaking the phone to the left or right. Like the iPhone it detects when the user has rotated the device from portrait to landscape, then automatically changes the contents of the display accordingly.

Features include FM Radio with transmitter, voice commands and Felica compatibility for payments.