This electric fencing system with 2 receiver collars is a reliable and cost-efficient pet containment system. The transmitter emits a harmless radio signal in a radius between 20ft to 850ft(selectable) around itself and the signal is detected by the collar. If your dog walks out of the signal boundary of the transmitter, the receiver will deliver warning beep sounds, vibration and shock to warn your dog until it goes back into the signal boundary. Besides, you can switch the transmitter to Dog Training Mode to train your dog via beep/vibration/shock modes. No wire needed and rechargeable features allow it portable for outside traveling to protect your dogs in limited space. Wireless Dog Fence Mode: This dog fence system 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. 1 Transmitter can connect with several receiver collars and all receivers will connect with the transmitter automatically once they power on. 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. We provide you with 2 receiver collars for your multiple dogs. IPX6 Waterproof Receiver Collar: The receiver 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 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, 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. How It Works In Fence Mode: When your dog exceeds the safe distance, the electric shock vibration stops after three cycles, and the sound alarm stops after ten minutes. Product Type: Wireless Dog Fence And Training Collar Color Available: Black, White, Gold Material: ABS; Woven Strap Battery: Transmitter: 3.7V/2000mAh Rechargeable Battery; Per Receiver: 3.7V/400mAh Rechargeable Battery Transmitter Charging Time: 1-2Hrs Transmitter Working Time: 1-2 Days Receiver Charging Time: 1-2Hrs Receiver Working Time: Depends on Using Frequency (Standby Time: 7-10 Days) Working Mode: Beep, Vibration, Shock Intensity: 0-9 Levels of Vibration; 0-9 Levels of Shock Waterproof Rate: IPX6 Control Range: 6-260m/20-850ft Connecting Quantity: Up To 3 Dogs In Training Mode ; No Quantity Limit In Fence Mode Suitable Dogs: 6 Months ; 15-120LBS Collar Circumference: 24-58cm/9.45-22.83in 2-In-1 Micro USB Cable Length: 50cm/19.69in Per Receiver Size & Weight:6.5x3.8x4cm/2.56x1.5x1.57in; 65g/0.14lbs (Thickness: 2.5cm/0.98in) Transmitter Size & Weight: 11x8x2cm/4.33x3.15x0.79in; 127g/0.28lbs Package Size: 20*19*5cm/7.87*7.48*1.96in Package Weight: 403g/0.88lbs 1 x Transmitter 2 x Receivers 1 x 2-In-1 USB Cable 1 x Test Bulb 4 x Silicone Caps(Assembled On The Receiver) 1 x User Manual