DecoFlair Cell Phone Sound Amplifier Ceramic Boom Bowl, White SOUND BOOSTER: Amplifies your phone speaker by 15 decibels, producing crisp, clear high-quality sound EASY TO USE: Just lay your device speaker side down into the boom bowl to have booming sound instantly MULTI-USE: Boost your conference calls volume, hear your ringer, make sure you hear your alarm clock, listen to your music, watch movies or anywhere a little sound boost is needed PORTABLE: Completely wireless and powerless, hands free and small enough to take anywhere COMPATIBLE: Fits most cell phones and MP3 players. 5 wide x 4.5 high