MTX MUDHSB-B Universal 6 Speaker All Weather Handlebar Sound System Two 2" x 3" Full Range Speakers and Four 1" HF Tweeters All Weather Construction for Use on Any Vehicle Integrated Bluetooth Receiver with Automatic Pairing via NFC Auxiliary Input for Connecting Devices Via 3.5mm Cable / Auxiliary Output for Connecting An External Amplifier or Additional Sound Bar Universal Mounting Clamps Fit Bars Between 7/8" and 1-1/4". Power, Ground, and Accessory Wire Included For Easy Installation