The PetSafe Waterproof Basic Dog Trainer is a remote-controlled device designed to help train dogs of all sizes (S, M, L) using vibration and static/shock methods. With a 300-foot range, this navy blue trainer is waterproof, making it suitable for outdoor use in various weather conditions. It is also compatible with Bluetooth for added convenience. This product, made in Vietnam, provides a reliable and effective way to train your dog using a humane and controlled method.