Quickly and effectively teach old dogs new tricks–and new dogs old tricks–with the PetSpy M686 Premium Dog Training Collar. Whether you want to correct excessive barking or aggressive leash pulling, or you just want to add security to off-leash walking, this collar helps you to control your best friend from up to 1100 yards away. It offers four training modes including continuous and convulsive shock, vibration and sound, with eight adjustable levels of vibration and shock, so you can fine-tune the correction level to achieve positive results with any pup. The innovative contact points are made of conductive rubber to prevent skin irritation and the entire device is waterproof. An intuitive button layout design allows for “blind” operation without needing to look at the remote.