One Click Super Dog Trainer STOPS BARKING, chasing, digging, chewing & jumping with the click of a button. SIMPLE TO USE. A complete dog training instruction sheet for the One Click is included for FREE. PROTECTS you and your loved ones by repelling mean or nuisance dogs while you are walking, cycling, jogging or skateboarding. Convenient wrist band included. Fits conveniently in your pocket or in the palm of your hand. 100% SAFE ultrasonic beep is inaudible to people and harmless to dogs.No electricity, sprays, spikes,wires, fences or collars . NO RECHARGING, plugging in or wires. Uses one 9-volt battery, which can last up two years. Low battery indicator included. UPGRADED, thicker outer shell prevents breakage for longer life. WORKS UP TO 50 FEET, 20 feet farther than other brands. ULTRA-BRIGHT LED FLASHLIGHT FOR evening walking.