<b>Information</b><br>Petacc hand-held ultrasonic anti-barking device is an ideal training tool to make your dogs stop unwanted barking.<br><br>When the dog is barking, you can use the device and it will emit an ultrasound which can make the dogs feel uncomfortable. You can train the dogs repeatedly in this way and make them form an conditioned reflex to the ultrasound and become quietly.<br><br><b>Features</b><br>Material: ABS<br>Maximum effective control range: 16.4ft/5m<br>Ultrasound frequency: 25kHz<br>Size (about): 3.94*1.77*0.98''/10*4.5*2.5cm<br>Weight (about): 1.6oz/46g<br>Color: black<br>Package list: 1* anti-barking device; 1* user manual; 1* lanyard; 1* USB cable<br><br><b>Notice</b><br>* The actual color may vary slightly from the online image due to monitor color settings.<br>* Please allow slight measurement deviation for the data.<br>* If you want to know more details or have any questions, please look <br>through the detailed page or contact the customer service.