Kleen Freak Sound Amplifier Cup for iPhones and Android - Two Pack A completely cordless and battery-free speaker that is scientifically proven to increase your phone's volume by more than 100% Place your smartphone, iPod, or other portable music player into the Kleen Freak Smartphone Speaker No need for cords, bluetooth, syncing concerving precious battery power Can be placed anywhere and keeps device contained and in upright position for easy viewing Includes (2) Kleen Freak Smartphone Speakers