The device offers three various modes (Beep, Ultrasonic, Flashlight + Ultrasonic) to get your dog's attention. Depending on the sensitivity and response of your dog, you can use the appropriate one.

DOUBLE ULTRASONIC SENSOR — It generates ultrasonic sound waves with a frequency of 25 KHZ so that the dog can hear the sound within a 16.7 feet range, a stable training distance, without causing any harm. You probably will not hear the sound because humans typically can hear an ultrasonic sound with a frequency that does not exceed 20 KHZ. It is safe for humans and all-sized dogs.

HIGH-CAPACITY RECHARGEABLE BATTERY — The device has a built-in lithium rechargeable battery with a high capacity, 1000mAh. It needs only 2.5 hours for a full charge and lasts for days.

EASY & CONVENIENT TO USE — It fits well in your hand and pocket due to its small size and unique design. It also has a distinctive design that makes it easy to use by simply pressing a few strategically placed buttons. It is perfect for indoor and outdoor use.