The WED-2000 is a Palm Size Fully Digital Ultrasound Diagnostic System with unique waterproof design and runs on a combined power supply mode of AC adapter and built-in Li-ion chargeable battery. It adopts various technologies such as microcomputer control and digital scanning converter (DSC), large dynamic broadband low-noise preamplifier, logarithmic compression, dynamic filtration, edge enhancement, etc., to ensure legible, stable and high resolution images.