The device has an optional BOSS speaker set. Sounded BIG in my driveway. When first started, the head unit failed after 3 hours of use (several buttons stopped working). This is where BOSS will take you, if it's been more than 30 days, they will force you to pay shipping to get an exchange for their defective product. After wasting time with customer service (and promising they would pay shipping, they didn't) I paid $17 to have their product shipped to them and got a replacement. Be aware of the product and the handling of several customer service representatives who do not communicate with each other and examine the application in its entirety. Terrible experience.
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