POP VIEW Bark Collar [New Version] Humanely Stops Barking with Sound and Vibration. Safe SHOCK, Harmless and Humane. Small Dog Bark Collar, Medium Dog Bark Collar Self contained battery operated unit, long lasting Lithium battery included, nothing to plug in, no cables, no computer needed Our device is the only one that will READ your cartridges as well as RESET them Easy to use, just push a button, no fussing with 'alignment', programmer fits precisely on cartridge Fast operation, less then one second, nothing to turn on or off, automatically shuts itself off when it's done Nothing to wear out, you can reset each cartridge thousands of times, backed by a full warranty and money back guarantee