Supporting Bluetooth V 2.0 + EDR， this A1022 Desktop TF Card Mini Bluetooth Speaker with Call Function / Radio Receiver Function Red can give wireless connection and unlimited fun. With Built-in microphone， this Bluetooth speaker supports wireless call and provides you with clear call experience. The smart keys also embody the Bluetooth speaker’s function. In addition， this Bluetooth speaker can be used as FM audio receiver. Equipped with built-in MP3 decoding chip， it can support plug and play function. Fine workmanship and fashionable appearance meet your demands completely. Just enjoy wonderful music with this Bluetooth Speaker.                                    Features            Support FM function<br>With built-in rechargeable battery<br>Support TF card and card reader<br>Support a key to answer function<br>Produce high-fidelity sound effect<br>Quick frequency response range<br>Adopt advanced electronic components<br>Designed with silk tweeter system<br>Give you extraordinary audio experience<br>                                                            Specifications             Color     Red    <br> Bluetooth Version     2.0    <br> Bluetooth Frequency     2.4-2.48GHz    <br> Working Distance     10m    <br> Audio Driver Unit     40mm    <br> RMS     5W    <br> S/N     ≥85dB    <br> Impedence     2.6Ω    <br> Distortion     THD≤10%    <br> Music Format     MP3    <br> Card Reader     Support    <br> Memory Card     Support TF Card    <br> Battery     Built-in Rechargeable Li-on Battery    <br> Power Volt     DC 5V/6V    <br> Ports     Mini USB Port    <br> Dimensions     1.97 x 1.77" / 5 x 4.5cm (HxD)    <br> Weight     7.2 oz / 204 g    <br> FM Frequency Range     87.5~108MHz    <br> Headset Hole     3.5mm Standard Interface     <br>                                                             Package Includes            1 x Bluetooth Speaker<br>1 x Manual<br>1 x USB Power/Data Cable<br>