SIEMENS CH5-2 ULTRASOUND TRANSFORMER For: Acuson X300, Acuson X300 PE 7.5, Acuson X150, Sonoline G60 S, Sonoline G40 Form Factor: Convex Application: Abdomen, Early Obstetrics, Emergency Medicine, Fetal Echo, Obstetrics, Gynecology, Peripheral Vascular, Renal, Urology, Venous Frequency Range: 1.4 – 5 MHz DOM: 2012 - new in the box, never used.