The High-end Bluetooth Speaker built with the original exhaust-pipe from the 911 GT3. High-quality materials including an aluminum housing. Bluetooth 4.0 and apt-X technology for a wireless music transfer from smartphones, tablets or PCs at CD quality. 60-watt system performance plus true wireless (The True Wireless function enables you to wirelessly connect your 911 Speaker with another 911 Speaker as a second sound source in the same room) mode for pure stereo sound. Easy connection with devices via NFC technology. The integrated lithium-ion battery enables you to listen to music on the move for up to 24 hours without having to connect back up to a plug socket. The duration for which you can play the device on the battery will depend mainly on the ambient temperature, the music played and the volume selected.