Exclusive ReadyTest(TM) produces a brief pleasant clicking from the collar to assure you of perfect collar fit, and indicates the system status and battery status of the receiver collar.

Waterproof Collar -- stands up to rough punishment, even submerged in water.

The new, rechargeable lithium ion batteries charge in only two hours and maintain their charge for weeks at a time.

Patented Run-Through Prevention (correction level automatically increases as your pet approaches the boundary) and timeout between corrections help your dog learn limits quickly and safely.

Kit includes 500 ft. of single-conductor ground wire to enclose up to 1/3 acre (expandable to 25 acres with wire kits, sold separately - see PRFA-500), indoor wall-mounted transmitter with with mounting hardware, UltraSmart rechargeable receiver with adjustable collar, surge protector, receiver collar charger, interchangeable contact points, contact point training covers, operating and training guide, 500 feet of wire, 50 training flags, waterproof slice capsules and wire nuts, test light and contact point wrench.

Recommended for pets 6 months or older and over 8 pounds.

Add PIG00-13620 collars to contain more than 1 dog (no limit to the number of dogs that this system can contain)