3D Stereo Mini Rugby Shape Bluetooth Speaker with TF Card Slot(Blue) <ul class=productAttributesList><li><span>Playback Function:<span><span>MP3,Radio<span><li><li><span>Frequency Range:<span><span>150Hz-20KHz<span><li><li><span>Number of Loudspeaker Enclosure:<span><span>1<span><li><li><span>Battery:<span><span>Yes<span><li><li><span>Power Source:<span><span>Battery,DC<span><li><li><span>Material:<span><span>ABS<span><li><li><span>Support Memory Card:<span><span>Yes<span><li><li><span>Remote Control:<span><span>Yes<span><li><li><span>Built-in Microphone:<span><span>Yes<span><li><li><span>Communication:<span><span>USB,bluetooth<span><li><li><span>Speaker Type:<span><span>Computer Speaker<span><li><li><span>Channels:<span><span>2 (2.0)<span><li><li><span>sytle:<span><span>mini<span><li><li><span>Package Weight:<span><span>0.2kg<span><li><li><span>Package Size:<span><span>16cm x 6cm x 6cm<span><li><ul><div>Features: Built-in Bluetooth wireless transmission, call hands-free function. Simply connect your smartphone, tablet and other devices to the speaker via Bluetooth. Thanks to the integrated USB port and TFcard slot, you can listen to your music anytime and anywhere from your USB stick or TF card. Supports all external 3.5mm terminals audio input. Support FM auto search station. Fit your home, office, ect. Compact size lets you easily move it about from room to room. Description: Signal to noise ratio: ≥ 84dB Sensitivity: 80db+2db Output power: 3W Magnetic speaker: 4Ω 3W 40MM Input voltage: DC 5V Working voltage: 3 to 5.5V Battery Capacity: 600 mAh Charging time: 3hours<div>