The CLEEB OURG Dog Shock Collar is a remote dog training collar that provides three different modes of correction. The collar features a beep sound and vibration function that help you correct your dog when they are off-leash or misbehaving. The shock collar has a range of up to 15 feet and can be adjusted from 5 to 50 feet. The small dog shock collar has a range of up to 10 feet and can be adjusted from 2 to 20 feet. The medium dog shock collar has a range of up to 25 feet and can be adjusted from 3 to 30 feet. The large dog shock collar has a range of up to 40 feet and can be adjusted from 4 to 50 feet.