Bluetooth Speaker with Rechargeable Battery. It is compatiblewith laptops, MP3/4 devices, TF/USB Flash Drive, or any audio device that isBluetooth compatible or has a 3.5mm jack input. With the Bluetooth, it sendsgood interference-free performance, high data rate, high quality andefficiency. It comes with a Built-In FM Radio to listen to your favorite radiostations and with the Detachable and Rechargeable Lithium Battery included. Didwe mention it comes with a Built-In Microphone? The Microphone will allow youto make and receive Hands-free calls and listen to the other person loudthrough the speaker. If you are playing your music and a call comes in, themusic will stop and you will hear your phone ring and will continue playingafter your call has ended.

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Bluetooth FunctionUSB/TF Card Slot, Support MP3 Format

Built-In FM RadioCompatible with Laptop/MP3/MP4 Player and ExternalAudio Devices with 3.5mm Stereo Jack inputRechargeable Lithium BatteryDual SpeakersBuilt-In MicrophoneHands-Free Call Feature