Features 1.BASS: The diaphragm on the back has a woofer function that emphasizes bass and achieves a rich sound. Supports 3W rated power. 2.WIRELESS CONNECTION: It is a wireless dual stereo speaker that does not require wires. You can easily connect two speakers wirelessly to fill your space with 360 degree sound in any space. 3.LONG LASTING TIME: Bluetooth speaker has a built in 450mAh lithium battery, supports USB charging, easy to charge and use, long lasting time. 4.SOUND INPUT: Wireless Bluetooth speaker supports AUX, USB and memory card sound input, you can play your favorite MP3 songs. 5.COMPACT AND PORTABLE: Portable Bluetooth speaker is small and lightweight, does not take up too much space and weight, easy to carry and use. specificationItem Type: Bluetooth Speaker_x000D_ Material: ABS_x000D_ RMS: 3W_x000D_ Sound Input: AUX, USB, Memory Card_x000D_ FM Frequency: 87?108MHz_x000D_ BT: 5.1_x000D_ Distance: 10m/10.9yd_x000D_ Built in Polymer Lithium Battery: 450mAh_x000D_ Charging Interface: Type C DC 5V_x000D_ Memory Card: Maximum Support 64G (not Included) PackageList 1 x Bluetooth Speaker 1 x Charging Cable 1 x Carrying Strap 1 x Sound Cord 1 x Instruction Manual