Helps to stop manage and mitigate excessive barking problems caused by dogs - Prevents complaints from neighbours - Remotely controlled via radio frequency (RF) -- no line of sight required - Wireless control range about 200 meter radius (manufacturer rated) - Multiple levels of bark control methods: vibrations mild and physically harmless static shock and noise to warn the dog - Remote controller features LED lights that acts as a flashlights while walking with your dog at night - Collar powered by 2 x 1.2V/1.5V Alkaline/Rechargeable AAA batteries (included) - Remote controller powered by a 9V 6F22 battery (included)