Advanced Technology And Contoured Collar Fit. Readytest Tells You If The Collar Is Fitted Properly, The Battery Status, And Your System Status. Run Through Protection Includes Transmitter, Collar, Recharging Unit, 500' Wire (Will Enclose Approx. 1/3 Acre), 50 Flags, And A Training & Installation Dvd Built-In 24/7 Battery Backup In The Event Of Power Failure. Lightweight Rechargeable Collar Rechargeable Lithium Ion Batteries – Fully Charges In Just 2 Hours Recommended For Pets 6 Months Or Older

The Innotek® Ultrasmart™ Iuc-4100 In-Ground Pet Fencing System Sets A New Standard In Pet Containment Technology. The Difference Is In The Sleek, Streamlined Comfortable Collar -- 30% Smaller And Lighter Than Other Containment Receivers. Innotek'S Exclusive Readytest™ 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. The New Lithium Ion Batteries (Similar To Cell Phone Batteries) Charge In Only 2 Hours, And Maintain The 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 His Limits Quickly And Safely. Includes 500’ Of Single-Conductor Ground Wire, Indoor Wall-Mounted Transmitter With Audible And Visual Wire Break Alarm, One Rechargeable Collar Receiver With Neckstrap, Boundary Wire, Training Support 800 Number, Complete Installation Instructions, Dvd, Training Flags, And Accessories. A Voltage Converter Is Available For Our International Customers.