Original W227 Dog Fence System, With High quality.  
with retail box !
This is Electronic Pet Fencing System for two dogs. It is among the most reliable, cost-efficient pet containment systems available today. A buried wire transmits a harmless radia signal. When you dog approaches the boundary, the signal causes the dog's collar receiver to deliver a warning beep first. If your dog continues closer t the boundary, the system will issue a mild shock. If your dog continues further, hte system will issue stronger shocks until your god returns to within the boundary you have set up. Your dog will naturally seek to avoid correction, and is content staying within established boundaries
Features
Waterproof
1.New and high quality
2.Pulsed proportional stimulus
3.Progressive tone stimulus
4.Variable field width control
5.Audible and visual wire break indicators
6.Speed detect anti-run through
7.Built-lightning protection
8.Multiple collar peration
9.Up to 5000 aquare meter range(over 1.2 acre)
10.Quick disconnect terminals
11.Low power consumption
Package included
1 x Indoor wall-mounted transmitter
1 x Power plug
1 x Adjustable receiver collar
1 x Boundary wire of 300 meters
2 x Extra metal contact points
20 x Training flags
1 x Test bulb