The Chison L8M-V Linear transducer has a frequency range of 4.0 MHz. – 15.0 MHz. and supports the following applications: Abdominal, Anesthesia, Breast, Cardiac, MSK, OB/GYN, etc…. The L8M-V transducer is compatible with: Sonobook 8, Sonobook 6, Sonobook 9 ultrasound systems.