【BASS BOOSTER with V5.0 BLUETOOTH】Built-in BASS BOOSTER button with anti-magnetic woofer, 12mm drive unit and high sensitivity (112dB/mW), CHGeek fm transmitter bluetooth car adapter provides stereo Hi-Fi level sound; powerful bass, clear vocal, and crisp high tones form perfect balanced sound. High-performance, low-power true wireless Bluetooth 5.0 chip enables high-fidelity audio applications, supports farther and more stable connections
【HANDS-FREE CALLING & NAVIGATION BROADCAST】Switch to hands-free mode automatically from music playing status when receiving calls, press the button to answer or hang up your phone calls while driving. You can also redial the last phone call by double pressing the button. Besides, CHGeek fm transmitter car bluetooth adapter supports navigation App on your phone, you do not need to look down the phone to ensure safe driving. Supports incoming call announcement
【DUAL USB CAR CHARGER】This bluetooth adapter for car allow you to charge your USB enabled devices by the dual USB ports(5V/2.4A+1A). Built-in smart charging IC, will auto detect your devices and then charge them at optimal speed
【ENSURE SAFE DRIVING】Safety is always the priority. With large display screen, you can easily recognize car's battery. It is equipped with a voltmeter to show you the condition of your car battery. Voltage should be between 13.2V to 14.7V when your car is on and moving. 12.2V to 12.8V when your car is parked and ignition is off. A large key is easy to press. Totally free your hands. Built-in over-current, over-voltage, intelligent temperature control and short circuit protection
【HOW to AVOID INTERFERENCE】 Please separate the frequencies of the two (car radio and FM transmitter) without using the fm transmitter to avoid interference when listening to the broadcasting station. Before inserting the fm transmitter into the cigarette lighter socket, please find the blank frequency on the car radio.