Due to State and Federal Law, we sell Syringes and Needles only to the Medical Facilities. Supplied with one transducer of choice: 4, 5, 8, 10 MHz, or 2, 3 Obstetric Mhz * A sophisticated pocket Doppler with bi-directional indication of blood flow velocity, 4 level gain control, LCD display, outputs and true separated audio signals, active noise reduction, digital interface to Dopplex Printer/ EKG/ or Dopplex Reporter software package for printout of waveforms (RS232) * Power Source: 9 Volt Battery * Auto-Shut off: * Includes: Probe of choice, soft carry case, neck cord, headphones, gel, battery, fitted pocket clip, warranty card and user manual *