Rechargable & Removable Lithium Ion Battery; Support long play. Using time taken for five hours; Built-in Microphone for Handsfree Functionality with mobile phone; AUX line in & microSD card slot allows music playback from various sources; Compact and portable, convenient to carry,Mini Bluetooth Stereo Wireless Speaker with MIC and TF Slot , enjoy wireless music anywhere, anytime. Phone functions, bluetooth receiving functionPress and Hold the Play/Stop button more than 2 seconds to switch Mode,Press and Hold the back or forward button to adjust the volume; This speaker has 3 modes: FM Radio Mode, TF card mode, Line-in mode,With this device, you no longer have to have headphone wires in the way of listening to music from your portable
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