The Sony Digital Voice Recorder with Built-in USB lets you record a variety of sounds and voices in extreme clarity with minimal background noise thanks to auto voice recording. This stereo digital voice recorder also has built-in USB for easy file transfer and expandable memory. With as much as 55 hours of battery life and adjustable microphone settings, the ICD-PX470 recorder gives you plenty of versatility.Easy File Transfer The Sony ICD-PX470 Digital Voice Recorder has a convenient built-in USB direct connection for fast and simple file transferring. Without needing a USB cable, plug the recorder into a USB port to quickly transfer files.Included microSD Card SlotThere are 4 GB of built-in memory in the ICD-PX470, providing a maximum recording time of 59 hours and 35 minutes (in stereo at MP3 128 kbps). With a micro SD card, you can expand this capacity by up to 32 GB of extra memory. With a 32GB microSD card, you get the equivalent of more than 536 hours recording time.Calendar SearchQuickly find a file you're looking for with Calendar Search. The calendar marks recordings by date for easy organization.Transcription Playback ModeReview your recordings with Transcription Playback mode. You can easily fast-forward and rewind or create cue points in the track to save your place. With Digital Pitch Control, you can slow down the speed of playback for closer listening.Reduce Unwanted Background NoiseEliminate unwanted low-frequency background noises with the low cut filter. Projectors, traffic or wind will distort your recording, but you can filter those sounds out to focus on the voices.Bundle Includes:Sony PX Series ICDPX470 Digital Voice Recorder with Built-in USBSanDisk Ultra 16GB 80MB/s UHS-I Class 10 microSDHC Card