The newest High Quality Rechargeable And Waterproof 300 Meters Remote Electric Shock Anti-bark Pet Dog Training Collar(this for 1dog)Description:Multi-functional (4 in 1) training collar is a combination of Vibration + Static Impulse + Beep+ LED LightThe static impulse can quickly and effectively curb the improper deeds of the petLCD display shows the stimulation level(no backlight)The system be used for 1 receivers100 levels of vibrationRemote Range up to 300 yardsPower saving into STANDBY MODE for transmitter without operation for 20s， and turn off after 2 mins. The receiver turn off after 4 mins.Note: The collar receiver is designed to be waterproof. The rubber cover has to put in the right position. It may be hard to put it back when you are not used to it. You could take out the screw first and it may help you to put the rubber cover to the right positions.Adjustable belt length， maximum girth up to 18 inch， two pair of metal prong(short&long) to suit the dog with varied fur thickness.Fit most dogs with weight from 10 to 120lbs Specification:AC Adapter: Input 100-240VOutput DC 5V 500maFrequence: 433.825MHzTransmitter: 3.7V 500ma LipReceiver: 3.7V 500ma LipPackage include:1 X Remote Control1 X Collar