IRW1016 Features: * Range: 1 Mile * Ni-MH rechargeable battery * Momentary / Continuous stimulation * Completely waterproof * Patented lock and set safety * Locating light with flashing and constant modes * Blunt stimulation * Tapping sensation button (improved vibration) * Settable booster level (1 through 60) * Made in the USA Specifications: * 100 Levels of medical grade electrical stimulation Warranty: * 2 Year warranty