Anti Bark Device, Waterproof Strong Rechargeable Barking Deterrent, Easy To Use Dog Barking Control Device With Dual Ultrasonic Speakers Safe For Human And Dogs, (1pc)

The effectiveness of all ultrasonic anti-bark devices lies in the intensity of ultrasonic waves and the transmission range. This product has 2 ultrasonic speakers, which increases the intensity of ultrasonic waves by 100%, and the range of ultrasonic waves is also significantly improved. The dog barking control device comes equipped with two ultrasonic speakers. The device can reach a distance of up to 55 feet! You can expect great results at this distance stopping excessive barking from your neighbor's or your dog . This product uses a 1500mAh rechargeable battery, which can be used continuously for 15 days after charging for 5 hours. Using the old version of the dry cell will cost you an extra five 9V batteries, worth 20 dollars per month. It has three gears that can adjust the frequency, which is effective for almost all types of dogs. One to three gears are suitable for large, medium, and small dogs, respectively.