Feature:1. Made of plastic and nylon materials, safe and nontoxic, durable, no harm to pet healthy.2. Lowpower replaceable battery, longterm use, nylon collar, soft material, antiabrasion skin.3. With sound and vibration mode, there is no actual harm to pets, safe to use for training.4. The vibration intense can be adjusted through 6 levels, which is more suitable for different pet states.5. You can feel the intense of the vibration with your hand, and then choose the appropriate intense for your pet.Specification:Item Type: Anti Barking CollararMaterial: Plastic + NylonColor: As Picture ShownWeight: Approx. 70.0g/2.5ozBattery: Dry Battery 4LR44x1(not included)Product Function: Vibration, SoundScope of Application: Small DogsHow to use:1. Put in the battery, turn on the switch at the bottom of the transmitter, and set the desired mode2. After debugging, install the electrode head and collar, and you can wear it to the dog.Package List:1 x Transmitter1 x Collar1 x Manual