Need to amp the volume on your device? The iFrogz Boost NearField Audio speaker is the simplest solution ever. Just put nearly any smartphone or digital media device on top of the Boost with the external speakers playing and the Boost magically amplifies the sound. It just works. No wires. No Bluetooth. No Synching. No problem. An auxiliary line-in jack is provided for devices without external speakers. Many have asked if the Boost has a hidden microphone to pull this off. Nope. The Boost uses patent pending NearFA technology that actually syncs the audio signal from inside your device before pumping it out the two high-quality 2W x 2 RMS speakers. Your tunes are then boosted with room filling sound.