①. Ultrasonic technology: The bark stopper uses ultrasonic technology, which will produce ultrasonic waves to repel dogs. ②. Double speakers: The dog barking control device adopts a dual speaker design, with ultrasonic waves and dispersion power. ③. Laser Design: The dog barking deterrent device adopts laser design, the laser rays stimulate the dog's eyes and scare the dog away. ④. Multiple scene applications: Dog barking deterrent can scare away vicious dogs, stop approaching, and can also train dogs to stop barking. ⑤. Compact design: The dog barking stopper is small in size and light in weight, does not take up much space, and is suitable for portability and use. ⑥. Package includes: One Bark Stopper ⑦. Note: 1. Please allow some errors due to manual measurement. Please make sure you don't mind before bidding. 2. Due to different monitors, colors may vary, please understand. Hello, please pay attention to your shipping address when purchasing products. If your delivery information (e.g. name, street, house number, doorbell/box without name, etc.) is incorrect, the order will not be delivered correctly.