Toshiba Xario PLT-1204AT linear ultrasound transducer 1.Type:linear 2.Frequency: 4-7 MHz 3.Compatible system: Aplio 50 SSA-700A, Aplio SSA-750A, Xario Series 4.Application:Vascular,small parts,breast 5.Pre-owned one in excellent working condition 6.We provide 60 days warranty