Not restricted by network Supports insertion of a TF card and USB flash drive, expandable up to 32G, ensuring ample storage and not restricted by the network Simple and convenient Large screen display and rotary button design provide an easytouse solution for staying connected on the road Seamless connectivity without the need for external energy sources Reliable protection Intelligent voltage detection function safely protects your car and equipment while driving Hands wireless call receiver is safe for you Convenient communication Wireless transmission allows you to link your phone to your car stereo, enabling quick song changes, call answering, and volume adjustments Use scenarios Daily commute: store music and podcasts on TF card or USB drive for offline playback, while handling calls hands for safer driving Long road trips: rely on offline storage for entertainment without network access, with simple ondevice control for easy navigation of tracks and calls Rideshare or delivery driving: connect your phone wirelessly to the car stereo to manage calls and music without taking eyes off the road or hands off the wheel Specifications and compatibility (based on provided features) Storage options: TF card and USB flash drive, expandable up to 32G Display and control: large screen display with rotary button design Power and connectivity: supports seamless connectivity without external energy sources Safety features: intelligent voltage detection for vehicle and equipment protection Calling and wireless use: hands wireless call functionality Wireless linkage: wireless transmission to connect phone to car stereo for music, calls, and volume control