BIG SOUND FOR YOUR MUSIC With a total of 40W and advanced DSP, Add-on T5 delivers a purely amazing sound from such a small speaker. BLUETOOTH 4.0 Add-on wireless speakers use the latest Bluetooth 4.0 standard for best sound quality and transmission. You can play your music wirelessly from any Bluetooth devices; iOS , Android , Windows Phone and Mac / PC. CONNETCS TO EVERYTHING Besides playing music wirelessly with Bluetooth, there is an additional audio input to connect other audio sources with cable. USB FOR POWER Easily charge your smartphone by connecting it to the USB power supply port. You can also for example power a Google Cast receiver if you want to let the T5 join your Wi-Fi network.