1. Free resend service: Regarding logistics damage/non human damage or inability to power on/screen flicker 2. o mode: SPK+FM+AUX+Bluetooth 5.0 3. Phone connection mode: carplay/android auto/apple airplay/android mirror 5. Display screen resolution: LCD 1600 * 600 IPS Front camera resolution: 4K FHD 3840 * 2160P Rear camera optional Resolution: 1920 * 1080P 6. 5s Power on, Fast boot 7. Max External Memory: 256G Please Note: Carplay's Bluetooth does not connect directly to the Bluetooth of the car radio. We support dual Bluetooth modes, and once the phone is connected to our carplay, it can also connect to the Bluetooth of the car radio. Dual Channel Recording Front camera 4K 2160P + Rear camera 1080P Rotate The Front Camera in 360 Multiple different uses, not only as a driving recorder, but also as an in car camera, always caring compatible for the safety of the baby in the back seat. 2 Cameras - 3 Recording Channels 2.5K Front or Inside or Right Lens 1080P Rear Camera Carplay & Android Auto This portable car radio with wireless carplay, android auto. Carplay Connection method 1, Open setting 2, Turn on Bluetooth 3, Find the monitor's bluetooth name connection 4, Connection succeede Android Auto Connection method 1, Open setting 2, Turn on Bluetooth 3, Allow