GE 3V-D 3D/4D Phased Array Used Ultrasound Transducer/Probe 1. Type: 3D/4D Phased Array 2. Frequency:1.5 - 4.0 MHz. 3. Compatible system: GE Vivid E9 4. Application: Cardiac, Contrast 5. Condition: original, in good working condition 6. With 60 days warranty