Features: Deluxe UltraLight Receiver with adjustable collar 4 adjustable levels of correction plus beep-only mode Low battery indicator on Receiver Collar Transmitter has built-in lightning protection Pet-specific customized training method Manual and video CD included Transmitter Specs: Height: 4.75" Width: 4.25" Depth: 2.10" Frequency: 10.65 kHz Standard, 7kHz alternative available Flip up front cover Light gray in color Two red indicator lights (loop and power) Wire break alarm Two Boundary Wire terminals Boundary Width Control Knob "ABC" Boundary Control Switch Adapter: Model number: RFA-14 (12v A/C, 830 ma) Ground Terminal Fuse protected, uses 250 volt 1/2 amp fuse Receiver Collar Specs: Height: .75" Width: 2" Depth: .75" Weight: 1.5 oz Uses 6-volt (RFA-67) Battery Waterproof Interchangeable Contact Points (Long and Short) Concave inside surface (side facing throat) Curved washers to match concave surface 25 second safety timeout Has Progressive Correction and Anti-Linger programming