The Prefect solution to help train your dog to stop unwanted barking. The collar can be programmed for a beeping Tone only, or a beeping Tone warning with the e-Stim shortly following. FEATURES: 100% Waterproof (dog can wear while wet or in water) 8 user-programmable levels of harmless static stimulation 6-volt battery included with unit, average Battery Life, 2-3 weeks depending on frequency of use