This collars manual dog training set comes with a rechargeable battery and is perfect for training your furry friend. The set includes a charger and is designed for dogs of size L and M. You can control your dog's behavior with three different methods: vibration, static/shock, and ultrasonic. The collars are easy to use and are a great addition to your dog supplies. They are perfect for training and obedience and are guaranteed to work. This set is a must-have for any dog owner who wants to train their dog effectively.