Description A pet-perfect yard is now perfectly easy without expensive fences or buried wires. Keep pets playing happily and secure in your yard and off the street. The sleek in-home unit is tiny and portable; it just needs an outlet! The waterproof, rechargeable collars are our smallest yet. With easy training, custom collar settings, and protection up to ¾ of an acre, the Stay + Play Wireless Fence gives your pet the best in yard freedom.PRODUCT DETAILS: Portable wireless system sets up in 1-2 hours For dogs 5 lb. and up Fits neck sizes 6-28 in. Tone for training plus 5 levels of adjustable correction Tone-only mode alerts your pet with a beep Automatic safety shut-off Covers an adjustable circular area up to 3/4 acre (210 ft. in diameter) Expand containment size with additional wireless transmitters Add an unlimited number of pets with additional PetSafe Wireless Fence Receiver Collars Waterproof receiver collar Rechargeable battery (built-in; non-replaceable) Charges in 2-3 hours System is compatible with all PetSafe Wireless Fence Receiver CollarsWHAT'S INCLUDED:Wireless transmitter with power adapter Receiver collar with rechargeable battery Test light tool Operating and training guide 50 boundary training flags 2 long contact points Contact point wrench