Philips C9-2 Curved Array transducer has a frequency range of 2.0 MHz. – 9.0 MHz. and supports the following applications: General purpose obstetrical and gynecological, small adult and pediatric abdominal applications. The Philips C9-2 transducer is compatible with Philips Affiniti 70 and Philips EPIQ 7 ultrasound systems.