WOLFWILL 800 Yards Dog Training Collar Waterproof & Rechargeable E Collar with Beep Automation Adjustable Vibration (1*collar) remote trainers easy to carry and useFor easy to carry and useFor dogs from 15 pounds to 120 poundsInstructionsYou need to identify a central point that will be the center of the play area of your dogs you can use it to check the Receiver whether work and the intensity of the stimulation Packaging Content: 1x Receiver 1x Remote transmitter 1x Adjustable Collar 1x Charging adapter 1x USB charging cable 1x Wrist Strap 1x Test light 1x User manual 4x Contact points Waterproof & Rechargeable E Collar with Beep Automation Adjustable Vibration (1*collar)