The Philips V6-2 3D/4D Curved Array transducer has a frequency range of 1.9 MHz. - 4.7 MHz. and supports the following applications: Abdominal, Obstetrics, Gynaecology, Pediatrics. The Philips V6-2 transducer is compatible with: Philips HD11; Philips HD11XE; Philips iU22 ultrasound systems.