The Petsafe Ultralight Sonic Bark Control Collar emits an unpleasant but harmless piercing audible sound that interrupts your canine chum from barking. The collars cutting-edge sensitivity is adjustable so your dog’s bark can be detected every time, no other sound will set the alarm off as it only recognises your dogs unique bark. Ideal item for small dogs with big attitudes!!

• Best results on small dogs
• Only weighs 30g
• Measures 4.75cm