specifications: Display Modes B,B+B,B+M,M,4B Frequency: 2.5MHZ-7.5MHZ Scanning Depth: 70mm~220mm Gray Scales: 256levels Cine locp: 400frames Image Storage: Built-in memory-64 images USB disk storage Image Reservationg: up/down,left/right Image Conversion: distance,circumference,area,volume,EF rate,heart Measurements: rate,Time OB Measuremengts: BPD,GS,CRL,FL,HC,AC,EDD,GA,FWVIDEO(PLAD,NTSC),USB2.0 Monitor: 5.5 inch TFT color LCD body markers: A variety of body markers(40 sorts) Standard Configuration: One(1)Main unit One(1)R40/3.5mhz Convex Probe One(1)AC-Adaptor One(1)Rubber Protector One(1)Rechargeable Battery Two(2)shouider and waist beits ALL above will be packed in a carrying case Comments: date&time,name,sex,age,hospital Applications:Professional sofeware package in Obstetrics,Gynecology,Urology and Small parts Weight: 700g Dimensions: 230mm×120mm×42mm Battery working:3 hours Optional: probes: R40/5.0mhz Micro-convex Probe L40/7.5Mhz HF linear Probe R10/6.5MHz Transvaginal Probe Biopsy Car Lighter Additional rechargeable battery