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 ½-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.Package Contents: Transmitter, Receiver (two receiver/collars for Dogtra two-dog models), Battery charger and splitter cable, and Owner's manual. Ultra-compact receiver/collar designed for smaller dogs Checkered grips on the handheld transmitter Precise stimulation level (0-127) 2-hour rapid charge Lithium Polymer batteries LCD screen displays exact level of stimulation even in dark or low light conditions