US-B20A Full Digital Handheld Ultrasound Characteristic Hand scan . 5.5 inch TFT color LCD Backlight Key Lithium battery≥3Hours. Dimensions ：230mm×120mm×42mm Weight:700g Main Parameter Display modes: B, B/B, 4B, B M, M Gray scale: 256 levels. Gray scale: 256 levels. Cine loop :≥400 frames Image storage :Built-in memory-64 images ;USB disk storage. Image Reservation :up/down ,left/right Frequency conversion: 2.5MHz-7.5MHz OB Measurements: BPD、GS、CRL、HC、AC、EDD、GA、FW Applications: professional software package in Obstetrics, Gynecology, Urology. Cardiology and Small parts Focus position: dynamic electron focusing Comments: date & time, name, sex, age, hospital Output Interface VIDEO（PALD，NTSC） USB2.0 Optional Probe Convex Trans-recta Micro-convex
