Esky Remote Dog Training Collar Rechargeable LCD Shock Control Pet E-collar Train System with 100 Level of Vibration and Static for 15-120lb Dog LED Flashing Dog Collars help protect your pet from oncoming cars, cyclists, and pedestrians! Professional 4 modes ( static/shock/vibration/beep) for dog training 100 intensity levels of vibrations/static shocks are adjustable. Easy to read, backlit LCD display that shows stimulation level. Expandable:The system can be expanded with 2 receivers