Specifications Standard probe: 3.5MHZ Convex; Scanning Depth: 240mm Max( depend on the probe types) Frequency: 2.5MHz -8.5MHz ( Depend on the probe types) Connectors: 2 .Blind zone: d5mm; .Display modes: B; B+ B; B+ M; M; 4B .Gray Scale: 256; .Image amplification: × 1.0; × 1.2; × 1.5; × 2.0; .Local zoom: Intelligent zoom in real-time and forzen mode, 4-step. Electronical focusing: 4 focuses combination randomly; .Depth shift: B, B+ B modes real time shift; .Resolution: laterald 2mm; axiald1mm; .Frame correlation: B, B+ B modes 3 level; .Image reverse: up/ down; left/ right; black/ white; .Measurement: distance; circumference; area; heart rate; gestational week; fetal weight etc; .Annotation: time; date; ID; age; sex; detecting depth; probe type; focus; frame correlation etc; .Chinese-English inter-conversion; .Cine loop; 341 , playback selectable, can be saved in USB disk and recalled for analysis Obstetric table: BPD; CRL; GS; FL; AC; HC; FW; EDD .Body marks: e40 types with probe position; Video output: PAL-D , VGA Monitor: 12 " LCD high resolution monitor Power Supply: 100V~ 130V/ 220V~ 240V, 50/ 60Hz Net Weight: 6Kgs ( including probe) Dimensions( mm) : 410§ 320§ 410 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 1) Standard probe: 60R/ 3.5MHz Multi-freq Convex Probe ( 2.5-3.5-5.0MHz ) 2) Optional probes: 5.0MHz Multi-freq micro convex. ( 4.5-5.0-5.5MHz) 7.5 MHz Multi-freq Linear Probe ( 6.5-7.5-8.5MHz ) 13R/ 6.5MHz Multi-freq Trans-vaginal; ( 5.5-6.5-7.5MHz )