great speaker, solid sound. im no audiophile but its crisp. its about knee high or 13", and its just one speaker. the image with two is just showing two sides. i have a $6 mic (qfxm106) with TRS jack and it click right into place. easy to charge with USB from my windows pc tower, three modes: mic, bluetooth, and radio. the mic mode just lets you talk with it, the bluetooth mode lets you play mp3 from your smartphone once its connected while also being able to sing or talk with the trs mic connected/jacked. the speaker itself has a glowing light that cycles thru the rainbow slowly, and the big knob in the center controls on/off and cranks up the decibles volume. great use for open mic, backyard bbq, celebrations, office podium talks, or even a restaurant hostess speaker. cons: will not be able to drown out a large crowd. simple fix is to chain this amp to another set of speakers that can crank the volume more. [[[ this is a very great 3-mode speaker for very cheap/affordable, with crisp sound, and can live off battery charge without being plugged in.