Features:1. Built-in Bluetooth wireless transmission, call hands-free function.Simply connect your smartphone, tablet and other devices to the speaker via Bluetooth.2. 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.3. Supports all external 3.5mm terminals audio input.Support FM auto search station.4. Compact size lets you easily move it about from room to room. Fit your home, office, ect.Specifications:Signal to noise ratio: 84dBSensitivity: 80db+2dbOutput power: 5W x 1Magnetic speaker: 4 5W 40MMInput voltage: DC 5V 500mAhWorking voltage: 3 to 5.5VBattery Capacity: 300mAhPlaying time: 180minCharging time: 120minShell material: PC+ABSItem size: approx.150*60*55mmPackage size: approx.150*57*57mmPackage Included:1 x Bluetooth Speaker1 x USB Charging Cable1 x User Manual