Frequency (Hz): 2.0 MHz. - 5.0 MHz Warranty: 90 days Applications: Cardiac Compatible: Medison SonoAce SA-9900; Medison SonoAce SA-8000Live; Medison SonoAce SA-8000EX ultrasound systems. Frequency range: 2.0 MHz. - 5.0 MHz Applications: Cardiac Compatible with: Medison SonoAce SA-9900; Medison SonoAce SA-8000Live; Medison SonoAce SA-8000EX ultrasound systems. Return Policy90 days warranty Return in case of manufacturing defects Return for incopatibility assumed by the buyer Tags: Ultrasound Probe