Wide vewing angle Five multifunction buttons B, 2B, 4B, B/M, M Memory capacity: 320G (option) THI Duel probe-holder 2 probe connectors Built-in battery (option) 2 hours for outdoor use Ultra-Compact Full digital beam-former Harmonic imaging (THI) Built-in lithium battery (re-chargeable by car) Water-proof keyboard cover (option) i-Image SRA Chroma, Trapezoid imaging, Compound image Applications Small animal ABD, OB, GYN, Cardiac