Radio Systems Corp. (Petsafe, Innotek, SportDOG, Premier) items are restricted to Radio Systems Authorized Retailers only. Please contact your account representative for more details: Features: Three adjustable levels of static correction. Waterproof, rechargeable receiver collar is contoured for a comfortable fit. Exclusive ReadyTest and PerfectTest ensure that the receiver collar is ready and working. 24/7 battery back up plus surge protection keeps your dog safe even when electricity fails. Covers up to 25 acres with additional wire and flags (sold separately). System works with multiple pets (additional PetSafe UltraSmart receiver collars required). Compatible with Pawz Away Indoor and Outdoor Barrier Systems. For pets over 8 pounds. System Includes: Transmitter with mounting hardware and power adapter. UltraSmart rechargeable receiver and adjustable collar fits neck sizes 8" to 28". Surge protector. Receiver collar charger. Interchangeable long contact points. Contact point training covers. Operating and training guide. 500 feet of wire. 50 training flags. Waterproof splice capsules and wire nuts. Test light tool and contact point wrench. One year warranty.