Pair of Chrome and Black weather proof 3" 600 Watt full range speakers 600 Watt max amplifier with wired remote volume control Bluetooth audio streaming One pair of RCA inputs, 3.2mm aux input compatible with smartphones and MP3 players Frequency Response 80Hz to 15KHz, SN >85dB, THD: 0.01 Included mounting brackets adjustable to fit 3/4" to 1-1/4" handlebars