Main Features:100% brand new and high quality.Portable Size and Easy to take it to anywhereBuilt-in Loudspeaker and volume can be adjustable. Easy to connect to the audio outport on your computer or other musical devices Specification:Name:Mini Portable SpeakerSize:65*65*65cmSignal to noise ratio: ≥60dBResolution: ≥70dBFrenquency:90Hz-20HzPower:DC5V Packing Included:1 set of Mini Speaker