Complete System for up to 1/3 acre Features: QuickFit?buckle provides quick release and perfect fit every time Durable, waterproof Receiver Collar Flexible collar Operating and Training Guide Step-by-Step Installation and Training DVD Transmitter Specs: Height: 5.75" Width: 4.75" Depth: 2.10" Frequency: 10.65 kHz Standard Flip Open Front Cover Light Gray in Color Two green indicator lights (loop and power) Wire Break Alarm Two Boundary Wire terminals Boundary Width Control Knob "ABC" Boundary Control Switch Adapter Model number 300-006-0 Receiver Collar Specs: Height: 1.5" Width: 2.5" Depth: 1.25" Weight: 4.0 oz Uses PetSafe RFA-67 Battery Waterproof Fits neck sizes 8"-28" 25 second safety timeout