Squeaky Irritating Sound Prank Practical Joke April Fools' Day Prop Prank Gifts for Adults. It includes multiple sounds, crickets, beeps and more, very suitable for pranking friends, colleagues or partners. (Much better used in a quiet environment.) Long-lasting battery Our sound machine will not die after a few days, the battery can easily support it to run continuously for several months. Easy to hide This super small annoying squeaky device can be easily hidden in most places. It is light enough for tape or a magnet to hold it. Use them together or separately to drive them crazy. Hard to locate It is difficult to locate where the sound is coming from, due to the random intervals of about 3-20 minutes, before it runs out your victim's sanity will fail you. So evil Just turn it on, choose one of the available sound options and hide it. The best part is that it will keep making noise for what feels like an eternity, worked great as a prank. Package includes: 1 x Prank device Note: 1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. 2. Please allow 1-3 cm error due to manual measurement. (1 inch = 2.54 cm) Thank you for your support :)