WIRELESS DOG FENCE MODE: This electric fence for dogs customize a wireless radial shaped boundary with 16 levels of distance with radius range from 20ft to 850ft. When your dog is out of range, the receiver collar will trigger sound, vibration and shock to your dogs, and these modes will stop until your dog go back to the circle REMOTE DOG TRAINING MODE: Besides protect your dogs in a specified area, you can also train your dog with Dog Training Mode; Simply press sound/vibration/shock button to send different punishments to the corresponding dog via every single channel(Up to 3 dogs). You can also adjust different vibration/shock levels(0-9) according to your needs. Besides, silicone caps can be covered on the probes to avoid unnecessary burn to your dogs IPX6 WATERPROOF RECEIVER COLLAR: The wireless dog fence collar is IPX6 waterproof, which allows your dogs to get wet in the grass, mess with the sprinkler or play in the rain ADJUSTABLE & REFLECTIVE COLLAR: The electric dog fence collar can be adjusted from 9.45in to 22.83in to fit most sizes of 6-month+ year old dogs between 15-120LBS. Reflected strips on the collar make people see your dogs clearly even at night which effectively keep your dog safe USB RECHARGEABLE & PORTABLE: With built-in rechargeable batteries, wireless dog fence for 2 dogs: The transmitter and receiver can be recharged via USB cable about 1-2 hours for fully charged and can be used for 1-2 days; Great for taking for camping, vacation homes, or anywhere you travel; No need to bury messy wire