Dogwidgets DW-2 Rechargeable Remote 2 Dog Training 3 Level Shock and 1 Vibration Rechargeable collars. Will work with dogs from 15 to 100 pounds 3 levels of momentary shock, 1 level of vibration and 600 feet range. Shock 1 dog independently or vibrate both dogs at the same time. Water-resistant collars(Not water-proof) 6 months warranty from DogWidgets