1. Stop noisy barking by harmless ultrasonic sound 2. Range up to 50 feet 3. 4 levels of operation(including a test mode) 4. Durable and weatherproof for outdoor use 5. LED light flashes for low battery indication 6. 9V Battery operation - (battery not included) 7. Dimension: 15.5cmx15.5cmx16.5cm N.W : 300g 8. Certificate: CE/RoHS