Description
【100% RISK FREE GUARANTEE】-Year warranty, We support free replacement or 100% money back if there is any quality problems during the guarantee period, you can purchase with confidence. 【Adjustable Frequency Design】-Our dog barking deterrent devices can emit the high-pitched ultrasonic sound of different frequencies(standard, undulating and irregular) , which can avoid becoming immune to a certain frequency ultrasonic sound after a long time of adaptation and no longer respond to it. 【USB Recharg
