X-811 Mini Soft Bluetooth Speaker Compatible with all Bluetooth devices such as smartphones, tablets, PCs, etc.. Built-in Lithium Battery, support rechargeable battery. Support hands-free when answer calling with mic. Support external 3.5 mm audio input terminals of all. Support power 3w, Speaker unit size: 40 hm Support playing MP3 songs stored in the TF card. The material is Cloth with Plastic. Features TF Card / Aux / FM Audio Port Charging Port Volume + – Previous / Next Play / Pause / Call / Mode Switch Lifestyle Outdoor Speakers Portable Mini size Light-weight Long Stand-by for outdoors(Party, Hiking, Picnic, Camping).