Inspire kids' imagination with the Maxx Spy Sonic Ear Mic. This handheld sound amplifier helps inspire imaginative play while helping teach about sound and frequency. Have fun playing a spy on a secret mission or conduct a cool experiment, the possibilities are endless! Listen through windows, walls, and doors through the included headphones. The device is lightweight and easy to use, just put on the headphones, push the on button and you're ready to go!