Maximal Power Universal Car Windshield Mount Holder with FM Transmitter and Speaker for iPhones - Non-Retail Packaging - Black Amazon.com is the only authorized dealer selling MaximalPower brand products. Please make sure your item is ONLY sold and shipped by Amazon.com! All other marketplace vendors are selling counterfeit products that do not perform the same, and/or are not covered by our MaximalPower Warranty Transmit music from cell phone to car audio Built-in Audio Amplifier. Speaker + FM Transmitter modes Powerful vacuum suction cup base safety and securely mounts your device car windshield, desk, and other flat surfaces. Only distributed by amazon.com, all other marketplace sellers following this item are offering counterfeit non maximal power item and not covered by our warranty