GE RAB4-8L Convex Transducer 1.Type:Convex2.Frequency: 4-8 Mhz3.Machine model: Vouson 730 Pro and Expert series4.Application:abdominal OB/GYN and interventional radiology5.with one month warranty. Please contact with us for getting more information. These items are not for sale in the US. Tags: Ultrasound Probe