DOGREAT shock collar has been proven safe, comfortable, and effective for all pets over 15lbs, this e collar for dog training assists you in controlling your pet without a leash in a range up to 300M. At the push of a button, the remote transmitter sends a signal, activating the waterproof collar-receiver. Using the remote trainer consistently and correctly, most behaviour problems that your pet exhibits can be corrected or any basic obedience commands taught. DOGREAT is committed to investing and developing high-quality pet supplies for dogs. DOGREAT Dog Training Collar is the perfect solution to all your dog training needs. Safe, humane, and effective DOGREAT dog shock collars are great for training all shapes and sizes dogs. Features:IP67 Waterproof ReceiverSecurity Keypad Lock 100 Intensity Levels of Vibrations / Static Shocks LCD Display with Backlight Screen for Night Using Rechargeable Remote Transmitter and Collar-receiver Independent UP/DOWN Buttons for the Vibrations and Static Shocks IP67 100% Waterproof The receiver is IP67 100% waterproof. It is safe to let your dog swim in the pool or the river, or to train your dog on a rainy day or any weather conditions. Enjoy your training time happily and safely both indoors and outdoors with DOGREAT dog training collar. (The remote is not waterproof, please keep it away from water) Compact Design for all Size Dogs DOGREAT dog shock collar with remote is suitable for different sizes of dogs (15lbs-100lbs). It\'s a perfect dog shock collar with remote for large dogs. Adjustable nylon strap fits dogs with neck sizes 5.9\" - 23.6\". Meanwhile, Extra part of nylon strap can be cut off for the medium and small dogs Package: 1* Waterproof Receiver 1* Remote Transmitter 1* Wrist Strap 4* Long Contact Points 2* Conductive Silicone Caps 1* Test Light 1* Charging Cable 1* User Manual