CUPET(TM) Waterproof and Rechargeable No Bark Collar for Small Dogs/Control Barking with 7 Levels of Sensitivity The humane way to control your dogs barking! This Anti Bark Collar stops unwanted barking with two different types of correction. The collar will vibrate when the bark is detected, followed by a static correction, or you can use the vibration correction alone, without the static correction! ONLY USE THE SHOCK IF YOU NEED TOO!!!! Highly Adjustable! 6 Levels of adjustability for the static shock intensity! Shock can be set as weak or as strong as needed! Can be set to use vibration correction only or vibration in conjunction with the static shock. 7 levels of adjustment for sensitivity. Set the sensitivity according to ambient noise and also to the strength of the dogs bark. Collar is highly adjustable to fit all dog sizes! Rechargeable and Waterproof! This collar comes with rechargeable Lithium Ion batteries. Never buy replacement batteries again! The unit is also fully waterproof. No need to worry about rain, snow, or even swimming!