1.universal mp3 speaker 2.Rms power: 2x2W 3.Mono Channel/Stereo Sound 4.Input voltage:USB5-6v 5.color box speaker package 2012 Hot selling! Fashionable Universal MP3 SpeakersProduct description:Wireless Feature:Bluetooth 2.1 version+EDRCompatible V2.0,V1.2,V1.1Working range: 10-30 meters, Class II Frequency range: 2.4-2.48 GHz Support profile: OPP,OBEX,SPP,A2DP,AVRCP,FTP,HS/HF,DUN Signal-to-noise ...