SE Series, EST-300 Series, and EGB series are all capacitive touch screens. This touch technology is controlled with a small amount of charge drawn to the point of contact. Unlike the resistive touch screen uses a pressing method, thus, there are no limitations on the touch. Rather, it depends on the LCD screen, which is approximately 20,000 hours lifespan. Generally speaking, if it is used 8 hours a day, it can be used for up to 6.8 years.