ADJUSTABLE NO-BARK COLLARThe bark collars with adjustable nylon strap is suitable for dogs that fit size 5" - 22" and weigh around 8 to 150 lbs, so it fits small, medium and large dogs. Please allow two fingers of elasticity when putting it on your dog to better protect your dog's skin. If you are not satisfied with the training collar or have any questions, please contact us first, we will solve it for you. QUICK CHARGE IP67 WATERPROOF COLLAROur remote control dog collar comes with a high quality USB rechargeable battery that has a standby time of up to 60 days and an operating time of up to 30 days, ensuring long periods of uninterrupted dog training. The remote control and e collar for dogs charge quickly together in just 1 hour, and the IPX65 waterproof design allows your dog to move freely in rain or snow. INTELLIGENT ANTI BARKING DEVICEOnly your dog's bark can trigger the bark collars for dogs, which can effectively and safely filter out other irrelevant sounds and prevent false triggering. When fully inflated, the dog collar can be sprayed up to 42 times to stop barking more effectively, teach them to sit, and improve bad dog behaviours such as running around, eating rubbish, chewing furniture, and disobeying commands. LONG RANGE DOG TRAINING COLLARThe remote control of this stop barking dog device uses a worldwide frequency and is tested to receive signals up to 2700 feet without interference from obstacles. You can enjoy your training time in wide open outdoor areas such as beaches, parks, etc. The remote control is equipped with a torch for easy use at night. SAFE AND EFFECTIVE ANTI-BARKING COLLARThe anti bark collars for dogs has four functions: spray, vibration, warning sound and light, each of which is equipped with 3 modes to effectively stop your dog from barking and correct their inappropriate behaviours, such as running around, biting, fighting, chewing on furniture, disobedience, etc. (It is recommended to start with the sound first).