It features a 2.4" TFT LCD 320x240 colour screen, built-in 1 watt speakers, a line in port and a microSD card expansion slot up to 8GB.
Has an in-built podcast-ready Voice Audio Recorder with internal microphone (it is also possible to attach external professional stereo microphones) and FM Radio (with Radio Recorder) which is customisable in E100 devices running E100 firmware 1.03 or higher through the iriver plus 3 software.
The firmware updater, which can be downloaded from the iRiver support site, does not run on 64-bit versions of Windows.
It is a program for creating SNC lyrics files (manually synchronized with MP3 songs).
The iRiver LDB Manager allows to find files with lyrics automatically from the internet database, and then add karaoke text into MP3.