It"s all about user comfort. The SpeechMike Pro features customizable function buttons, allowing it to be adapted to your individual preferences. Use the push buttons to manage your dictations and the light-weight device will lie comfortably in your hand even during longer dictation sessions. The scroll wheel allows you to one-handed move through forms or documents, while the dustproof optical trackball offers unparalleled navigation accuracy. Control the playback volume directly on the SpeechMike for highest convenience. Excellent sound quality ensures crystal-clear playback, saving time during the transcription process.