Conceptual design of rotating shaft, 90 degree rotating range, rotating angle at your choice.Large screen display, 1.44-inch white text display on blue background is clearer, large screen display content is rich.Multiple playback options, support U disk/TF card up to 32GB, freely switch the playback mode.Using a 4-core smart chip from Taiwan, it not only provides 8-fold circuit protection but also improves charging efficiency.Mobile phones and models are not limited, mobile phones are not limited, as long as the mobile phone has , it can be used, and 12V-24V models can be used.Working current: 3.1A (dual USB smart current) version: 4.1Output voltage: DC/5VDisplay: LCD dot matrix screenInput voltage: DC12V-24VSupport expansion: U disk≤32 TF≤32Effective distance: >10M