Type:Ultrasonic Transducer Item:Color Doppler sound Probe lay mode:B, B M, color, PW, PDI Host:IOS Android Tablet Frequency:Convex probe 3.5MHz 5MHz, obe 7.5 MHz 10.0MHz Depth:Convex 100mm-280mm, mm-55mm Image gray scale:256 level Measure:distance, area, obstetrics etc. Weight:308 gram Wifi type:802.11g 20MHz 2.4G