The PetSafe Rechargeable In-Ground Fence offers a "quick charge" rechargeable collar. No more worries about being out of batteries. When the battery indicator tells you it is time for a charge just plug the collar into the adapter, recharge and in 2-3 hours you are ready to go.  Just add wire and the system can be expanded up to 10 acres. 

Features

• Expand up to 25 acres with boundary wire (not included)
• Receiver collar has rechargeable battery
• Collar battery recharges in 2-3 hours
• Each charge lasts up to 2 months
• There are 4 adjustable levels of correction
• Tone-only mode to warn your pet with a simple beep sound
• The receiver collar is 100% Waterproof and has a low battery indicator
• Best suited for dogs that weigh 5 pounds and up
• Receiver collar adjusts for neck sizes 6 - 26"
• Safety shut-off will stop corrections after 30 seconds if dog leaves the containment area
• Anti-Linger Prevention will save on battery life!
• Progressive "Run-Through" prevention will stop your dog in his tracks if he makes a run for it
• There is a built-in safety feature that protects against false signals
• This system will work in a multi-pet household, although additional receiver collars are required
• One Year Warranty

Box Includes

• Transmitter
• Power Adapter
• Rechargeable In-Ground Fence Receiver Collar
• Receiver Charger
• Lightning Protection Module
• 50 Training Flags
• Waterproof Splice Capsules
• Wire Nuts
• Test Light Tool