Features： 1、Orientation Switching: This 3.5in multi theme display screen supports horizontal and vertical screen switching and 360 degree screen rotation. 2、Energy Saving: This display screen can automatic turn the power off, which is energy saving and environmental protection. 3、Adjustable Screen Brightness: The brightness of the screen can be adjusted steplessly, which is comfortable and eye protection. 4、Easy Connection and Use: Only need a USB data cable to connect, no need for extra power and HD multimedia interface, one key operation for changing the background image and themes. 5、Wide Compatibility: The screen is fully compatible for Win systems, for lcd4linux software package, which supports 32bit 64bit, is compatible for Linux, available for Win systems, for NAS, for openwrt routers, for RPi and for Linux other systems. Specification： Item Type: 3.5in IPS USB Screen Shell Material: Plastic Screen Size: 3.5in Resolution: 320x480 Thickness: 0.3in Viewing Angle: IPS full viewing angle Interface: USB Package List： 1 x 3.5in IPS USB Screen 1 x USB Cable