Sony ICD-PX312D Digital Flash Voice Recorder Includes Dragon Naturally Speaking Voice to Print Software Includes Dragon NaturallySpeaking 11.0 (DVD-ROM) Software - Windows only Built-in 2 GB flash memory Records in MP3 (320 kbps-8 kbps) Records in MP3 (320 kbps-8 kbps) Approximately 72 Hours of battery life (recording)