Qpets Remote Training Collar for 1-3 Dogs Qpets Remote Training Collar is designed with RF434Mhz technology, offering a range of up to 600 yards. Rugged and 100% RAIN RESISTANT design allows your dog's collar and leash harness to stand up to rough outdoor play, rain or shine. 3 modes of operation: vibration, shock, beep.8 available levels of vibration stimulation. Expandable to 3 dogs with theQpets Add-A-Dog receivers; rechargeable Li-ion batteries included. Waterproof receiver and transmitter for reliable use in inclement weather, waterfowl hunting. POPULAR AND PROFESSIONAL DOG TRAINING COLLAR: Very Popular Dog Shock Collar with Remote used by Expert Trainers &amp; First Time Pet Owners;Dog Shock Collar can be used to help correct barking, walking, leash training, sitting, aggression, and other behavioral obedience.