1. Uses ultrasonic sound to deter unwanted barking

2. Detects the sound of barking up to 15 meters

3. 4 levels of operation including test mode , 3 range levels , On/Off switch

4. LED power indication

5. Unit size: L*W*H= 148*93*104MM

6. Powered by 3.7V rechargeable battery

7. Type-C charging cable