The Dogtra 280C is an ultra-compact system that packs all the features of our larger units but designed for dogs as small as 15 lbs. The 280C comes with Nick and Constant stimulation modes, along with a non-stimulating High Performance Pager. The handheld transmitter and receiver/collar features 2-hour rapid charge batteries, along with a ?-mile range. The set is fully waterproof and the LCD on the transmitter displays the remaining battery life and the exact level of stimulation output. The 280C is also available in the 2-dog system 282C.