The AI Dog Shock Collar is designed for training two dogs weighing between 10-120 lbs each. The remote control allows for easy adjustments to the three training modes, making it simple to teach your furry friends new commands. With a long battery life and IPX7 waterproof feature, this collar is both reliable and durable for all your training needs. Made in China, this model (CP69) offers a range of 3300FT for controlling your dogs from a distance. Fast charging capabilities ensure that you can keep your dogs trained and obedient at all times.