The ICD-BX140 4GB MP3 Digital Voice IC Recorder from Sony allows you to record voice memos, interviews, presentations, and more as MP3 files. The recorder features 4GB of internal storage, as well as a built-in microphone for capturing your audio without the need for an external microphone. A 1/8″ microphone input provides the option of using an optional external microphone if desired.
The unit is powered by 2 AAA batteries, which are included, that provide up to 45 hours of recording when using the 8kbps setting and up to 28 hours at 128kbps. In addition to recording, the ICD-BX140 is also capable of playing back MP3 files via its integrated speaker or through its 1/8″ headphone jack.