Fast charging: 4 times faster than standard chargers. Equipped with over-current, over-voltage, over-charging, overload, overheating and short-circuit protection to ensure the safety of charging on the go!Stylish and Unique Splice Design:The upper part of this car FM Bluetooth transmitter is made of aluminum alloy, which is strong, corrosion-resistant and durable. The semi-transparent ABS plastic bottom half allows the high-precision internal components to be seen at a glance, with high-tech and modern aesthetics. Experience the sophistication and allure of industrial design!Bluetooth and Built-in Microphone:The latest Bluetooth technology provides a stable wireless connection for smoother audio streaming with lower latency. Our in-car Bluetooth FM transmitter has a built-in high-quality microphone that allows you to talk hands-free without any background noise.Joystick Button Design:Our car FM transmitter features a stylish joystick button design that simplifies operation and eliminates the hassle of fumbling with small buttons while driving. By pressing the buttons up, down, left or right, you can easily tune the FM, switch songs and adjust the volume; answer, reject, hang up and redial calls by simply pressing the buttons.Support QC3.0, C2.0, PD, Huawei FCP, Samsung AFC, BC1.2, Apple 2.4A and other charging protocols.