Sufficiently loud: 7 oversized 1.5" metal dog doorbells and metal inner balls emit clear and loud bells, even if the dog touches it lightly, it is easy to hear from other rooms. DOG EASY LEARN: After simple training, most dogs can learn to touch a bell in about a day, and learn how to go outside or go to the toilet in the next week. Adjustable length: Two snap buckle designs can tighten the dog bell into different belt lengths, suitable for most door handle heights, large dogs, and small dogs. Sturdy bell metal: In order to prevent the puppy from visibly chewing or bending the training bell, and to prevent small metal balls from falling out of the potty bell, our dog bell uses super strong metal. Effective communication: Using a dog doorbell is considered a simpler, fun, and win-win way for the dog to talk to you instead of barking and scratching. Suitable for all door handles Our bedpan bells are equipped with adjustable straps to fit any type of door handle or handle. When your dog rings the bell, a nice and safe snap will prevent the bell from being pulled loose. 7 oversized 1.5-inch metal bells , nice-sounding bells are louder and clearer than 6/4 bells on the market, and the sound is easier to hear in other rooms. Made of sturdy material The waistband is made of sturdy materials such as nylon or leather, and the length can be adjusted without any settings or tools. If necessary, they can be easily moved to another door without being damaged by water or dust. How to train your dog properly. Step 1: Teach the dog to ring the bell with its nose. Before training, you can prepare some snacks. After saying "touch", place the bell in front of the dog's nose. It should touch it with its nose. If it does not touch, attract it with snacks. When it touches it, it should immediately say "good job", and then it will know that it is doing it right, repeat this behavior 10-15 times, until it immediately touches the bell when you put it in front. When the dog is sure that he can touch the bell with his nose, try to place it further away. Whenever you say "touch", the dog can run to touch the bell. You can train for 3-5 days, and then enter the second stage. Step 2: Train the dog to ring the doorbell. Put a bell on the door, prepare a snack, hold another bell in your hand, and say "touch" to the dog. If the dog immediately touches the bell in your hand, you should say "yes" and give it food. Then repeat this action 5-10 times until the dog can immediately touch the bell with its nose. Take a break, point to the bell on the door, and say touch it. The dog will immediately run to touch the bell. If you do, it will be rewarded. If not, it will continue to repeat the previous steps. The training time is about 3-5 days. Step 3: Train the dog to ring the bell by itself. When the dog wants to go out, let the dog touch the bell, and when it touches, open the door to let it out. Remember to do this every time you go out. When it touches the bell for the first time, immediately reward it with snacks and let it go out.<br> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.