Features: Gag Gifts for Adult:  It Includes Multiple Sounds, Beep & More, very suitable to prank friends, co-workers or partners. (Using much more better in a quiet environment.) Long Lasting Battery:  Our noise maker prank won't die in a few days, The battery can easily support it continuously run several months. Easy to hides :  This super small beeping device can hides easily in most places. It is light enough for tape or a magnets to hold it.Use them together or separately to drive them crazy. Hard to Locate: It's hard to pinpoint where the sound comes from, because of the Random Chirping intervals about 3-20 minutes, before it runs out of power  Just turn it on, pick one of the available noise options and hides it. Best part is it will continue to sound off for what seems like worked great as a prank stuff. Notice: 1.Actual color may be slightly different from the image due to different  and light effect 2.Please allow 1-3cm deviation due to manual measurement                Description: Size: 8x11cm Package List: 1/2/5PCS Toys