This collar features multiple training modes including beep, vibration (1-8 levels), and safe static stimulation (1-99 levels) with a 10% boost option. With a range of up to 3500 feet and dual-channel support, it's perfect for training two dogs simultaneously, indoors or outdoors. Suitable for dogs of all sizes (10-120 lbs) with adjustable neck sizes from 7.8 to 24.4 inches, the soft nylon collar ensures a comfortable fit. The IPX7 waterproof design and safety lock button provide durability and prevent accidental activation. Enjoy extended battery life with fast USB charging, offering up to 35 days of standby time for the collar and 45 days for the remote. Get ready for effective and humane training sessions!