Recording operation is simple:Long press the recording button, align the recording hole to make a sound, release the button to broadcast the recording when finished. Good sound quality: adjustable sound level, 8 ohm speaker, clear sound.Fully featured yet lightweight and small. Accurate and wide range of sensing anglesWith 120-degree PIR wide-angle sensor, this sound player detects motion from up to 13 feet (4 meters) day or night and plays a recording that is loud and clear. Multiple voice recordingsThe recording time is 30 seconds, you can record more than one voice, and the previous voice will be deleted automatically when the recording is full. Endless Applications (for Indoor Use): Perfect for elderly or those with memory loss that need reminders, point of sale advertising, exhibits, tradeshows, door greeter / welcomer, holding instructions for others while you are away, or block embarrassing bathroom noise. 3x AAA 1.5V batteries required (not included), or power using USB power adapter DC5Vnot included)