iGearPro USB Voice Recorder - Portable 4GB Flash Drive Digital Audio Recorder with 15-Hour Battery Life / No Flashing Light When Recording Windows compatible. The recording files are WAV format. If your device can't play this WAV audio, try VLC player; If you want to convert it to MP3 or ACC video, you can use Emicsoft Video Converter for Mac.NOTE: Cannot record and charge simultaneously. Make sure charge before you use it. High quality recorder; recording bit rate:128 kbps; supports WAV format. Simple to use: Just slide the switch to put the device to record. Plug-and-play, no drive need. Great for conferences, meetings, lectures, classes, and many other events.Ultra-portable storage device. Features 4GB flash drive memory, can be used as a regular USB flash drive.