Specification:Powered by USB port or li-ion battery. (Battery included)Small size, easy to carry.Ball size, wireless super bass stereo bluetooth speaker for smart phone tablet PC.Type: bluetooth-compatible SpeakerBluetooth Version: V2.1+EDRMaterial: ABSBattery Type: Lithium Battery (Included)Output Power: 3W THD + Speaker Impedance: 4 ohmsFull-range Speakers: 2-inch, 3WLow Frequency Diaphragm Diameter: 45mm/1.77" (Approx.)Receiving Sensitivity: > 78dbFrequency Response: 170HZ - 15KHZSize: 95mm x 95mm x 90mm/3.74" x 3.74" x 3.54" (Approx.)Features: Portable, Ball Shape, bluetooth-compatible Speaker, StereoNotes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x bluetooth-compatible Speaker