See the full review at http://www.timetoplaymag.com/toys/2732/wowwee/paper-jamz-pro-series-mic/
Kids can sound like their favorite pop stars with the Paper Jamz Pro Series Mics. These microphones (There are three different styles to choose from.) are designed to aid kids' singing. There are several different effects: Perfect Pitch keeps you in tune, Chorus multiplies your voice to add depth, Auto Vibrato adds dramatic effect to your voice, Melody Match tunes your voice so you sing perfect melody, and Auto Harmony makes it sound like your singing a duet. The Pro Series Mics come with two pre-loaded songs, but you can download your own music. Go to PaperJamzPro.com and download the app to your Mac or PC. Import songs from your computer into the app. Then sync the songs to the mic by connecting it to your computer via the included USB cable. Each microphone comes with an amp.