Edan SD3 is a new generation vascular  doppler as an upgrade of popular Sonotrax Doppler . The most impressive improvement is higher signal/ noise ratio comparing with Sonotrax doppler 

SD3 VASULAR DOPPLER DOES NOT HAVE A LCD DISPLAY . 

With excellent sensitivity, complete interchangeability and high durability, SD3 series Ultrasonic Pocket Doppler are ideal for routine fetal heart rate detection by the clinicians.

 Plug-and-play
 Compact design with easy one-hand operation
 built in speaker 
 Automatic power-off  
 Real-time monitoring for daily use
 Normal AA batteries for easy replacements

What included : doppler vascular body , waterproof 8mhz probe , carrying case , gel