Hoistspark Safe Ultrasonic With Adjustable Ultrasonic Level Dog Bark Control Training, Black

• Features three levels of frequency (15KHZ-30KHZ) to help find the best fit for your pup.
• Easy to use with a built-in pickup that can detect the dog’s barking within 35 feet and automatically emits ultrasonic sound that the dog can hear.
• Range up to 35 feet that covers both indoor and outdoor areas.
• Rechargeable with USB charging and IPX4 weatherproof.
• Safe for both people and dogs, emitting an ultrasound that only dogs can hear.

1.Please charge the device fully by USB before first time .
2.Please DO NOT install the device in water .
3.The product CAN NOT work while charging .
4.If the product is not use for a long time (for example :more than one month ),before using it ,Please charge it fully by USB . And if it doesn’t work after fully charged ,please Restart.