1. Material: ABS 2. Adapter plugs: American, British, European and Australian plug 3. Receivers and remote controllers are waterproof,and it is the highest level of IPX7. 4. Receiver and remote controller can be charged at the same time, standby time is long. 5. Intelligent program, very easy to operate, 16-level adjustable function mode 6. Innovative Blind Operational Design 7. Receiver and dog belt are more beautiful and convenient 8. Two dogs can be controlled at the same time. The second receiver needs to be purchased separately.