Automatic waterproof bark stopper
Features 1 Waterproof, can swim in the water
2 Small, comfortable for dogs, only 78 grams (including straps)
3 Fourth-generation precision chip, dog barking recognition
4 humanized settings without any settings
5 Low voltage alarm, charging reminder
6 sensitivity adjustment with 7 levels
Contact with conductive silica gel to protect the dog's skin
To
Function: Triggered for the first 2 times, only a warning tone will sound, no electric shock.
The third time the dog barks, the first level of electric shock is issued after a warning. If the barking continues, the warning sound and electric shock will increase.
There are 5 levels of electric shock intensity. After 7 triggers, there will be no triggers in 60 seconds.
Features:
l Rechargeable & Waterproof
Auto anti-bark
 More intelligent , More humanized
Auto Saving Power
Mini & Portable
Working principle : 
Please note :If your pet stops barking for 30 seconds, the Anti-Bark Collar will automatically resets to the first "tone only" level of correction. Otherwise ,it will trigger the collar to the next correction level.
If the collar is repeated through 7 correction levels, the LED light will flash for 15 seconds quickly. Then you need to wait for 60 seconds to get the collar work again. That's to say, even if it barking for 75 seconds, it can't trigger the collar to work.
Putting Anti-bark Collar on Your Dog:
Place the unit around your dog's neck and adjust the collar length using the slide buckle arrangement provides with the strap. The unit should fit snugly underneath your dog's neck. Make sure that the electrodes are in the direct contact with your dog's skin. Hair between the electrodes and skin will severely diminish the shock effect. If necessary, it is a advisable to clip or shave your dog's fur under the neck to insure direct contact.