With 300 watts of peak power and increased versatility thanks to an integrated USB charging port, the Kuryakyn 2720 Road Thunder Sound Bar Plus takes handlebar-mounted audio to a new level. An internal 4-channel amp powers two 2" x 3" full-range speakers with dual voice coils and four high-frequency 1" silk dome tweeters with N42 grade magnets for powerful distortion-free sound at any volume level. Amplifier 4 x 19WRMS, max 4 x 23W. Durable IP66-rated housing is weather-resistant. Built-in heat sink and self-protection circuit combat excessive heat and over/under voltage regulation. An internal 4.1 Bluetooth receiver allows wireless connectivity to any Bluetooth-enabled smartphone or music device. Auxiliary input and output ports connect standard devices via 3.5 mm cable. Integrated water-resistant 1.0 Amp USB charging port in end cap. Includes power, ground and ignition wire for easy disconnect. Speaker measures 10.6" L x 2.9" diameter, and bracket measures 6" L x 3" in diameter. Universal articulating mounting clamps fit virtually any bars between 7/8" and 1-1/4".