【Bring Voice Service in Your Car】: You can stay fully focused on the road by using Siri or Google Assistant to make phone calls, send texts or get driving directions. Nulaxy KM30 brings voice service in your car. 【QC3.0 Fast Charging】: It comes with a QC3.0 charging port to deliver high-speed charging to driver and passenger, the charging time is 4 times faster than conventional charging. 【Treble & Bass Music Streaming】: You can stream music directly from your car radio via Bluetooth / microSD card / Aux out, and enjoy free switching between treble and bass mode, the color spectrum auto-syncs with your music. 【Stronger Microphone for Better Hands-free Calls】: KM30 utilizes stronger microphone, greatly amplify sound reception and strengthen sound quality, bringing a higher level of experience. 【Car Bluetooth FM Transmitter】: Nulaxy KM30 car Bluetooth transmitter provides multi-solutions for your hands-free driving and in-car stereo streaming. It features a big display screen offering a wider visual interface for more information, such as incoming phone number, track name, FM frequency, battery voltage, Bluetooth connected device and more.