Combines a pair of combined bookshelf speakers. Power supply: 100V-240V, 50/60Hz (no battery inside) enjoy car-level hi-Fi sound driven by its built-in amplifier. Compacts most multi-media resources. Built-in Bluetooth and microphone. Directly answer/hang up any calls. Active Siri by the remote control and talk with Siri via its integrated mic. If you have any questions, please feel free to contact us. It presets 12 stations on FM. Press the FM button to shift between FM1/FM2. It also reads the audio files from a USB flash card and SD card. The package includes a 3.5mm-to-L/R audio cord with which you can connect any audio device via an audio port. Connect it with the TV via this cord to use it as a TV soundbar speaker in AUX mode. Setup the sound easily In the [system setting], you can set up sound/language/screen, etc.