With an ultrasonic releasing mode, a beep training mode, and a LED flashlight mode, Kozart barking deterrent device is more effective for Dog Training and Dog Bark Control. Dog barking deterrent devices can emit a wider frequency range, from 15 Hz to 120 kHz, which can help train your dog to stop barking, digging, scratching, climbing furniture and other bad behaviors without harm. Includes Dog Bark Control Device, USB Cable, Wrist Strap, Instruction Manual. (Dog whistle not included.) 3 Different Deterring Waves 15 Hz to 120 kHz Features an Adjustable Anti-static Wristband For Dogs Between 6 Months and 8 Years...