Sentry Industries Inc. Magic Box Wireless Stereo Portable Speaker No Cable, no Bluetooth, no infrared, no Wifi. Just simply put your mobile phone on the speaker, the sound will be magically amplified. Simply use: place your phone on top of the speaker, then the induction speakers will magically amplify the stereo music. Compatible with iPhone 5, 4S, iPhone 4, iPod Touch 4, android phone and other mobile devices with an external speaker. This magic interaction speaker with Audio input port, other Source equipment can be through the port Audio input to the speaker(Includes Audio in 3.5mm and DC in Micro USB sockets), and play pefect music ; Built-in polymer lithium battery, support the outer charging Best sound Magic Speaker Wireless interaction amplifier speaker compatible with iphone 4 and samsung galaxy s3