Description: Spend less time training and more time playing with your dog! This bark trainer is a great and safe way to train your dog to stop bad habits. Adjustable vibration stimulation allows you to easily adjust and maintain the amount of pain delivered to your dog for effective correction. Features: Waterproof design allow you to train your dogs anytime even in rainy days. Vibration can convert your dog's behavior and help correct barking, walking, leash training, sitting, aggression or other improper behaviors gradually without bring him any pain or distress. Making your dog stop barking immediately fot it is free from disturbance of environmental noise, which will reset automatically when the dog stop barking for 30s. Indicator will falsh and the trainer will stop working for 30s after 7th continuous correction, which is humane, safe and effective. USB cable with rechargeable and power-saving adapter is easy to get charged, which can be used for 3-10 days on 2 hours' charging. Suitable for most small, medium and large dogs with 15-120lbs. Adjustable collar can fit different dogs comfortably. Specifications: Material: Plastic + PU Color: As Pictures Mode: Vibration Input: 100-240V 50-60HZ Output: DC 5V Bark Trainer Size: 2.0 * 1.1 * 1.3inch Adjustable Collar Diameter: 5-8.5inch Weight: 200g Type: Training Bark Collar Function: Dog Bark Control Package Include: 1 x Bark Trainer 1 x USB Cable 1 x US Adapter 1 x PU Collar 1 x Manual Notes: Please don't place the trainer in water. Please adjust the tightness of collar with one finger width to maintain the vibration effect. Dear customer, please rest assured to buy without worrying about the plug adaption. We will provide an adapter for you according to different country standard to ensure its normal use.