Smart Dog in-ground pet fencing system and extension kit.

Features: 

Transmitter with back-up and wire break alarms

Patented run-through prevention offers secure,reliable containment

Microline waterproof rechargable collar with recharge reminder

Multiple levels adjust to fit your dog's temperament

Reflective collar strap for added safety at night

Can be quickly installed using common household tools

Can be expanded for yards up to 25 acres

This kit includes: 500 feet of insulated boundary wire (up to 1/2 acre of coverage), transmitter, collar, training flags, hardware kit, training video

Boundary kit includes: an additional 500 feet of wire and additional training flags