3 Training Modes Training Collar : PATPET Dog Training Collar provides 3 Safe effective humane training modes. Customized static shock (1-16) levels, vibration(1-8) levels, standard “Tone” mode. Different from other brands. We provide a more reasonable 16 levels design. It means the feeling between levels is more obvious.You can choose the most effective mode and intensity level to correct dog's behavior and teach a dog basic obedience commands Multi Channels Maximum Control : If you want to train two dogs through one remote, PATPET can meet your needs. PATPET Dog Shock Collar use a more human blind button design. More recognizable to prevent accidental touch, no need to worry about the accidental shock More Longer Remote Control Range : Up to 1200 ft that allows you to train your pet easily both indoors and outdoors. If your dog likes to play with water? Don't worry, PATPET Electronic Dog Training Collar adopts IPX7 waterproof technology, your dog can enjoy chasing toys around a pool, or playing in the rain freely 2-Hour Quick Charge & Longer Standby Time : Provide general USB charging cable which can charge shock collar and remote at the same time. After 2-hour fully charging, the receiver collar is able to work 12 days and the remote is able to work 56 days. Without operation, the receiver can last for more than 60 days standby time and remote has up to 90 days standby time Comfortable for All Sizes of Dogs: The adjustable nylon collar size length from 0-27 inch, Fits dogs with neck sizes 7" - 27". And training collar is very suitable for small medium large dogs ( 8lbs -120lbs )