Train your pet using sound tones Features: No Receiver Collar required Uses an ultrasonic tone for correcting unwanted behavior Uses a positive tone for rewarding good behavior 30-foot range Uses a 9-volt alkaline battery (not included) Manual included Height: 6" Width: 1.5" Depth: 1" Weight: 3.5 oz. Frequency: 20 kHz Red light on face

Pop off battery cover and belt clip on back The Positive Tone can be heard by humans