Main highlights of the product: The previous upgrade of the product avoids the cumbersome reset function and prevents triggering interference (filtering external interference noise such as product collision, mermaid, thunder, etc.) 1. Function: electric shock + ultrasonic + sound warning + sensitivity adjustment + load 2. All product functions are digital display gears 3. Products are available in 6 colors, black and bright 4. The product adopts USB charging and built-in microphone trigger 5. Electric shock, vibration 8-speed adjustment (0~7) Disable this function, 7-speed sensitivity (1~7) is convenient for humanized customers. 7. The battery level is displayed in 7 digits. 8. The product can be recharged repeatedly 9. The product uses a large lithium battery, which can stand by itself for 60 days Some long hair to ensure the efficiency of the product (for a small number of large dogs). 12. This product is waterproof, it will not be exposed in strong wind and rain, rest assured 13. If this product is triggered to work continuously for more than 7 times in one minute, it will stop the protection work, and restart the work after one minute to prevent animals from becoming unsuitable for animals from the beginning. Control characteristics Ultrasonic barking: 1. Use continuous ultrasound to prevent barboy dogs. 2. Ultrasonic transmission function can have a gentle effect on dogs. A strong hum stimulates the dog to stop barking. 3. Some dogs will have an effect in 2 weeks, and most dogs will have an effect in 4-6 weeks. Some breeds of dogs take more time to take effect. A habit cannot be changed, it can only be replaced with another habit. 4. Some dogs are more stubborn and the effect may not be obvious, then use the weak electric shock function.