Features:

• Effective for all cats over 6 lbs. and at least 6 months old.
• Powers up to 25 acres (4000 feet) of wire
• Collar includes stretch section for cat's safety
• Waterproof collar provides 4 correction levels plus a beep only mode
• Receiver collar fits cats with neck sizes 6 to 12 inches
• Containment system can expand to include any number of cats or dogs with purchase of additional collar receivers.
• Low battery indicator and included battery (RFA-188)
• Step-by-step installation and training DVD
• Wire break alarm on transmitter
• Limited Lifetime Warranty