Portabie Ultrasonic flaw Detector with hiresolution color TFT LCD display. THE background color and the wave color can be selectable according to the environment. LCD brightness can be manually set. Continue working over 8hours with high performance lithium-ion battery module (wlth large capacity lithium-ion ballery option), easy to be dismantled and the battery module can be charged independ ntly offline. It is light and portable, easily to be taken by one hand;easy operation; superior reliability makes it long life.