This 4 inch round LCD display kit combines a 720 x 720 circular LCD screen with a Micro H/D controller board for PC sensor panels, DIY dashboards, simulator instruments, embedded displays, and custom maker interfaces. The source specification lists USB 5V power input above 1A, H/D 1.4 support, standby mode when there is no input signal, and photoresistor input support for automatic brightness adjustment. This is the non-touch version.