Quick & Easy Results: The Coredy Bark Deterrent Device is designed to stop unwanted behaviors like excessive barking or squirrel chasing. It's more than just an anti-barking device; it's a complete behavior modification solution. Gentle Training Methods: We believe in gentle training methods that don't harm or stress your pet. The Coredy Bark Deterrent Device uses a combination of ultrasonic sound, strobe light, flashlight, and a 25 kHz ultrasonic training mode to modify behavior. Always Ready To Work: With a 2.5-hour quick charge, the Coredy Bark Deterrent Device is always ready when you need it. The 1200mAh battery powers the device in dog whistle mode, strobe mode, or flashlight mode, so you can address behavior issues without interruptions. Designed With Your Pet In Mind: We've designed the Coredy Bark Deterrent Device with your pet's well-being in mind. It includes an 8-second ultrasonic auto-shut off and a hold function that extends whistle and strobe modes to protect your pet's sensitive hearing. Proven Results: The Coredy Bark Deterrent Device is tested to be 3.4 times more effective than traditional dog training clickers or whistles. With an ultrasonic mode that delivers 2.7 times faster behavior modification, you can achieve "bark quiet" and "bark deterrent" results faster than ever. (Please note that this product may not be effective on dogs with hearing impairments. ) Mode Introduction:
1. Before use, push the switch on the left side to the ultrasonic frequency switching position.
2. All modes vibrate when pressed.

Sound Mode
Sound key operation: short press Beep to ring, long press to ring continuously.
Ultrasonic Mode
Ultrasonic key operation: short press to launch once, long press continuous launch.
The launch will stop automatically after the longest launch of 8 seconds, release the button, and press again to launch again.
Ultrasonic + Flashing Mode
Ultrasonic + flashing mode: short press to launch once, long press to launch continuously.
The launch will stop automatically after the longest launch of 8 seconds, release the button, press again to launch again, ultrasonic + flashing light work at the same time.
Flashlight
LED flashlight button operation: long press to open the flashlight, then short press to switch blinking, then short press to close.

The difference between the two ultrasonic waves:
1.Frequency conversion ultrasonic: 15kHz ~ 30kHz, it is easier to stimulate the dog's ears, and the effect is better
2.Fixed frequency ultrasonic: 25kHz

How to use:
1. Recommended order: Sound mode Ultrasonic mode or ultrasonic + flashing mode
2. Within 7 meters /23 feet, when the dog barks at the human, the trainer is pointed at the dog, 1) yell at the dog first: Stop barking (or similar, depending on personal habits), 2) then press the sound mode button, 3) if the dog continues to bark, press again, 4) if that doesn't work, use the ultrasonic mode, 5) Stop the button as soon as the dog stops barking.

Attention:
1. Do not use for dogs younger than 6 months
2. Not recommended for dogs older than 8 years
3. If you have multiple dogs at the same time, separate them before using them