Petsafe YardMax In-Ground Dog Fence 1000 Feet Heavy Duty 16 Gauge Wire For dogs 5 pounds and up Fits neck sizes 6-28 inches 5 adjustable levels of static correction Tone only mode alerts your pet with a beep Waterproof receiver collar Rechargeable collar battery 1000' 16 Gauge Superior Pro Heavy Duty Solid Core Wire by Monell Pets