... lcd tft tester 2) High resolution 640*480 3) Power-saving mode 4) CE, FCC etc 5) 195mm* W155mm* H85mm Key Feature:1 ... standby state4) Small appearance, highly integrated and practical5) Built-in rechargeable battery DC3.7V/1100mAh,Automatic charging function6) Power supply ... port power supply, DC5V/2A adapter power supply7) Mainly used in the camera images, perspective adjustment, saves time and effort, ...