... on your choice.(2)POWER SUPPLY ----Standard with two Internal lithium batteries,can exchange them easily ... 5/9.0 MHzOptional probe:5.0MHz multi-micro convex probe; frequency range:3.5/4.5 ... 2B,4B ,B/M,MFull field image with 8 lever adjustment(8 kinds Magnification)Gain range:general gain ... Bovine, equine, ovine, canine, feline, goat, llama with OB report. Heart of conventional measurements: depth, slope, ...