... Multi-frequency probe matching.7. Special probe connector, easy replacement of various probesTechnical parameters1..Scanning mode: Electronic convex / linear array / Tiny ... , date, name, gender, age, gain, hospital name, probe type and the operating frequency, full-screen characters editing9.PAL ... . C2640R3.5MHzC2-6/40R/3.5MHz frequency convex array probe2. C2720R5.OMHzC2-7/20R/5.OMHz frequency tiny ...