Dear customer , Good day ! This isPeter from Shenzhen sage human electronics co.,Ltd ,Which is the leading manufacture specialised in Voice Amplifier Speaker in Shenzhen China . We specialize in this field for 5 years with full experience and we have 100 % confidence in our technology and quality. Due to this, Dimar, Freud and Arden become our international partners. Now hot sellers include VOICE AMPLIFIER / USB PORTABEL SPEAKER . Glance to our company: l 5 years professional experience l Market share NO.1 in China / specialised in speaker industry . l Main market:Europe, America, , Middle East ,South America . Follow is one of our new private amplifier to recommend to you : Model : A827B Specification : 1.Mainly for Market-promotion, Class-teaching, Tour-guiding, Micro-meeting, etc. MIC / MEAGEPHONE /MUSIC speaker 3 in one . 2.REC One key for Recording Function, can record FM 3.LCD screen display the song lyrics and name 4.ECHO Volum control ,make VOICE More clear and Background music Volum control Make high quality sound . 5.Folder Music play , one key shift . 6.Support TF and USB card (1- 16GB) ,Support mp3/ WMA format music 7.FM Radio Function. Auto search FM. 8.Line-in function for MP3/MP4/PC, etc 9.High power big rechargeable lithium battery ,standby time 30 hours. 10.With Remote control, can operate more easily 11.One key shift play mold, Memory play, auto memory the last song played