Features: brand new and high quality Environmental protection: The wires are buried in the ground, do not occupy for extra place, do not affect the appearance, and give the dog more freedom. Progressive tone stimulation: When the dog approaches the border, a warning sound is first heard. If the dog continues to approach, the system will make a slight pulse stimulation. Adjustable pulse stimulation: Humane design, 4 levels of safe, pulse correction that you can adjust based on how your determined dog responds during training. Wide range of control: Control range is adjustable, up to 247 acres. Waterproof reciever collar: The dog fence includes a collar receiver that is completely waterproof. Your dog can swim with the collar on and won'for t affect its functions. Specifications: Material: ABS, Plastic Color: Black Size (Approx.): Package Box-35x25x6.5cm/13.78x9.84x2.56in Weight: Approx.1350g Package Includes: 1 x Transmitter 1 x Power Plug 1 x USB Charging Cable 1 x Receiver Collar 1 x Boundary Wire of 300 Metres 1 x Accessories 1 x User's Manual note: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!