3 Training Modes & 2 ChannelsThis dog training collar features beep. vibration. and shock modes. With 0-10 level adjustable intensity. you can adjust the stimulation level(only for vibration and shock modes) whenever needed. The transmitter comes with 2 channels to support training 2 dogs simultaneously. Indoor &. Outdoor UsageWith a remote range of 1969 ft. you can simply press the button when your dog begins to chew the furniture. excessively bark or pull the leash. It can be handy if youre teaching your dog off-leash commands in the park. backyard. or anywhere else. Adjustable Collar &amp. Waterproof ReceiverWith an adjustable neck circumference of 9-26in. its suitable for small. medium. and large dogs between 10-100 lbs.The IPX7 waterproof receiver can work normally when your dog swims or runs in the rain. Make sure that the charging port is well-sealed before the dog runs into water. Double Safety Setting &. Long Battery LifeYou can push the gear button to safety lock or simply turn the intensity dial to zero to prevent accidental shock. This USB rechargeable 2 in1 set can stand by for up to 180 days after being fully charged for 2-3hrs. No need to recharge it frequently. 2 Pairs Of Removable ProbesThis dog training collar comes with 2 pairs of removable metal probes. The longer probes are for long-haired dogs and the shorter probes for short-haired dogs. If you don'.t need shock mode. remember to remove probes to reduce friction.