This adjustable dog training collar is designed to fit most dogs comfortably, accommodating small, medium, and large breeds weighing approximately 10-100 lbs with neck sizes ranging from 10-27 inches. The small receiver and soft nylon collar help ensure a comfortable fit that dogs are more likely to accept. With a remote control range of up to 1000 feet, the collar allows flexible training in open areas such as gardens or beaches. The IPX7 receiver is built for use in various environments, including rain and swimming conditions, while the 2-in-1 Type-C charging design offers convenient, cable-compatible recharging using standard Type-C chargers.