Calendar Search & USB (Universal Serial Bus) direct connection Stay organised & work quickly with the Sony ICD-PX470 Digital Voice Recorder, ideal for journalistic, commercial & personal recording applications. Calendar Search lets you browse days on a calendar to find what you want  recordings are date-marked, so it's easy to keep track of your work. Connect the recorder directly to your PC via direct USB (Universal Serial Bus) connection to transfer files quickly & conveniently. You won't even need a USB (Universal Serial Bus) cable. micro SD card slot Start recording straight away with 4 GB of internal memory, letting you capture up to 59 hours & 35 minutes of audio in MP3 at 128 Kbps. The Sony ICDPX470 features a micro SD card slot so you can expand your storage up to 32 GB. That's a potential 536 hours of MP3 recording at 128 Kbps. Low cut filter & Auto Voice Recording Eliminate low-frequency background sounds during recordings with the low cut filter. It's useful for filtering out common problem sounds like projectors, traffic or wind so voices can be heard more clearly. Auto Voice Recording reduces background noise to enhance recordings with optimised settings for speech frequencies. Clear Voice technology cleans up the signal for even clearer playback. Adjustable mic range Change capture settings depending on what you're recording with adjustable microphone range. Use Focus mode for single voices  it captures a narrow sound field from one direction. For multiple voices, Wide-Stereo mode captures a wider range so each speaker is audible. Four scene presets (Music, Meeting, Interview, Dictation) let you pick the optimal audio setting Record for up to 55 hours You can record compressed MP3s or higher-quality Linear PCM files depending on whether you need to capture a lot of speech, or if you're recording music & other complex sounds. The ICD PX 470 Voice Recorder plays back MP3 & PCM files
- enjoy your favourite songs in music player mode. Record for up to 55 hours off the supplied AAA batteries when you're capturing MP3 files at 192 or 128 Kbps. That's plenty of battery life to cover long events.