Quickly and effectively teach old dogs new tricks–and new dogs old tricks–with the PetSpy M919 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 three training modes including shock, vibration, and sound, with 100 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. A dual-input charging cable allows you to charge the collar and remote at the same time.