MTX Audio Universal Sound Bar With Bluetooth Four 3" Full Range Speakers and Two 1" HF Tweeters. All Weather Construction for Use on Any Vehicle Universal Mounting Clamps Fit Bars Between 1.5" and 2.25 Auxiliary Input for Connecting Devices Via 3.5mm Cable /Auxiliary Output for Connecting An External Amplifier or Additional Sound Bar Integrated Bluetooth Receiver Power, Ground, and Accessory Wire Included For Easy Installation