Out of site boundary fence system sets your dogs boundary.   To keeps them safe and out of trouble and harms way.  Giving your pet room to move freely within his safe home grounds.  Giving  you the owner, the peace of mind you need. Your can have multiply dogs running off the same system you just need to purchase the extra DF-113R collars. Your dog does not need to be confined in a small area once it is trained with system he can have its own boundary fence. Your dogs will be able to enjoy a free range yard with “out of site boundary’s”. Your mind will be at rest knowing your dog is happy has boundaries and is safe from wandering. Fully dust and waterproof. Comes with Warranty. This product uses low level ECT Extra Receiver collars are available for purchase if you have more than one dog. Dog is safe to swim with collar. Fully Rechargeable System.  The receiver charges quite rapidly advisable to charge for 2 hours at a time and for **8-10 hours before first use** Fence mode Charge lasting 10-12 Days Box contains Fence Transmitter Collar strap Receiver Collar 150m Boundary Wire Boundary flags Boundary wire connectors Resister Test Light Spanner Long Prongs USB adapter Operating Guide Power adaptor for transmitter USB cable double charger Both the transmitter and the receiver charge quite rapidly advisable to charge for 2 hours at a time and for **8-10 hours before first use** Both can be charged at the same time and have the same adapter point. Fence mode Charge 10-12 Days Remote and Fence mode 75-80 hours