The Aloka UST-984-5 is a 5 MHz multi-frequency convex endovaginal transducer. This probe offers super high density with a 120 field of view. It is used in OB/GYM and vascular applications. The Aloka UST-984-5 is compatible with the following Aloka ultrasound systems: SSD-900\1000\1700\3500\4000. If you purchase this probe from probesupplier, you will have the choice of buying it either new or used.