GE RRE6-10-D 3D/4D Intra Cavity transducer has a frequency range of 4.0 MHz. – 9.0 MHz. and supports the following applications: Gynaecology, Urology. The GE RRE6-10-D transducer is compatible with: GE Voluson E6 and Voluson E8 Expert ultrasound systems.