NEW 1.Progressive Tone Stimulus---- A shock stimulus if your dog continues to move closer to the boundary2.Pulsed Proportional Stimulus ----- The closer your pet gets to the boundary， the more intense the shock3.Power Boost Switch-The width of the warning can be adjusted by field width adjustment knob in the transmitter4.Audio Wire Break Alarm----The system's control center has an audible alarm to alert you if it senses a break in the wire or if the boundary system is not functioning correctly5.Speed Detect Anti-run Through- The faster your dog is moving， the quicker the higher level of intensity is issued6.Visual Wire Break Alarm----The system's control center will light spark if it senses a break in the wire7.Quick Disconnect Terminals ----- quick and secure connection or disconnection of the wire to the control center8.Low Battery Indicator ----- When the light on the collar is green， it is working properly. Red means time to replace the battery9.Adjustable shock collar ---- Fit for different kinds of dogs，Maximum belt length up to 20" Package Includes:1 x Indoor wall-mounted transmitter1 x Power plug 3 x Adjustable receiver collar3 x battery for collar(6 Volt/per)1 x Boundary wire of 300 meters6 x Extra metal contact points20 x Training flags1 x Test bulb6 x Screws1 x User's manual Notes:1.Pls read the instructions before using the item2.The electronic dog collar is intended only for using on dogs3.A low battery may cause intermittent operation， dont use it if you suspect a low battery4.Allow your dog to get used to the collar before you begin training5.Do not leave the collar on your dog for more than 12 hours per day6.Never perform set-up procedures when the collar in on your dog7.An electronic collar should only be used under close supervisionhttp://contestimg.wish.com/api/image/rating?name=b426702c7b8911e68b9c065f903a9ac5.jpg&w=1000&h=1000&m=0&t=0