PROFESSION CUSTOMER SERVICE: Our after-sale service include 30-day Money-Back, 12-month Replacement, life-time Technical Support and friendly customer service such as response E-mail within 24Hrs are always here to support you troubleshooting .Please be free to contact us. BUILT-IN SPEAKER, AUX, FM: Hikity car touch screen radio with built-in speaker provides high quality sound. Audio can be delivered to the original car speaker. 1. Using FM Transmitter, keep the portable car play and your original car stereo at the same frequency. 2. AUX cable, connect the aux cable if there the interface on your car. GPS NAVIGATION AND DUAL BLUETOOTH: After paring with your mobile phone, the portable android auto car screen can provide real-time location without delay, helping to avoid traffic congestion. Connect your phone to both the apple car play and car speaker, you can enjoy a more comfortable sound from the car speaker. WIRELESS APPLE CARPLAY, ANDROID AUTO, MIRROR LINK: Connecting your smart phone to the portable car stereo via Bluetooth or WiFi, you can effortlessly reach to the map navigation, music, phone contacts etc. Huawei and Samsung phones are not supported. Allowed ‘Siri’ and ‘Google’ Voice Control. 7 IHCH APPLE CARPLAY SCREEN: Hikity Apple carplay equipped with a 7 inch full HD touch screen ensures a faster response speed, providing a clearer image. Suitable for almost all the vehicle, the Car Play can be added to any car. Coming with a sticky and a suction cup bracket, supporting to attach to the dashboard or windshield. Plug & play Cigarette Lighter included for easy installation without worry for the mess cable.