General description This fully waterproof electronic collar is popular with dog trainers and pet owners. Its training system will help you control and train your dog with vibration alarms, audible warnings, static punishments, and more. With its remote design, you can easily stop, run, and recall your dog from a distance, making it a valuable assistant for your training needs. Technical specifications Remote Control Distance: 800 Meters (No Interference) Frequency: 433MHz Transmitter Battery Voltage: 3.7V Receiver Battery Voltage: 3.7V Transmitter Charging Time: 4 hours Receiver Charging Time: 4 hours Transmitter Standby Time: about one week Receiver Standby Time: about one week Receiver Waterproof Rating: IP 67 Adjustable Collar Size: Maximum length 67cm Battery Type: Lithium-ion battery (built-in) Compatibility and accessories Can control up to 3 receivers of the same model Usage 3 Training Modes: Shock/Vibration/Sound Adjustable Vibration Levels: 1 to 99 Blue Backlit Screen: