1. Automatic anti-bark collar: Two-in-one remote control and automatic anti-bark collar, suitable for large, medium and small dogs, using an upgraded version of intelligent dog barking. Regarding how to test whether the anti-bark mode is working properly, we use a new technology in the barking mode, so instead of using the old method of scratching the collar and blowing on the collar to test, you need to put the collar under the throat and make sure that the two contact points touch the neck. You can test its operation by applying it to your skin and saying out loud: WU WU WU; WU WU WU; 2. [1,300ft remote range] The remote training collar has a range of up to 1,300 feet, allowing you to easily train your dog indoors or outdoors. 3. [Waterproof Receiver & Comfort Collar] IPX7 waterproof training collar is suitable for dogs to play freely around the pool or in the rain. The length of the collar strap is adjustable to fit dogs over 10 pounds with neck sizes from 8 to 24.4 inches! 4.