... Speaker-red Speaker System 1.CE,Rohs,FC, ISO9001:2000, HR4040, NO Phthalate 2.Back panel volume control 3.MOQ3K Features:1) Accompanying speaker ... Flexible sound with distinct tone levels4)Mellow and clear timbre5)Small size design, easy to take6) Built-in USB port for speaker chargingOur ... , CE ROHS, NO Phthalate,HR4040,California Prop65,etc. Audio Engine Speaker-red Speaker System