With the Sony ICD-PX470 voicerecorder you make clear recordings. Thanks to the low cut filter, disturbing ambient sounds are filtered. This way you will no longer suffer from the wind or passing traffic. The S microphone system captures sounds that are far away and unclear. Think of the sound of chirping birds in the distance. Recordings are sorted by date so that you can easily find them in the calendar. The voice recorder has 4 GB internal memory, but you can expand with a micro SD memory card of up to 32 GB. Via the integrated usb connection you can transfer recordings directly to your laptop or desktop.