Feature: 1. Made of plastic and nylon materials, safe and non-toxic, durable, no harm to pet health. 2. Low-power replaceable battery for long-term use; nylon collar with soft, abrasion-resistant material. 3. Equipped with sound and vibration modes; causes no actual harm to pets, safe for training purposes. 4. Vibration intensity can be adjusted across 6 levels, suitable for different pet behaviors. 5. You can test the vibration intensity by hand to select the appropriate level for your pet. Specification: Item Type: Anti Barking Collar Material: Plastic + Nylon Color: As Picture Shown Weight: Approx. 70.0g / 2.5oz Battery: Dry Battery 4LR44 x 1 (not included) Product Function: Vibration, Sound Scope of Application: Small Dogs How to Use: 1. Insert the battery, turn on the switch at the bottom of the transmitter, and set the desired mode. 2. After setup, attach the electrode head and collar, then place it on the dog. Package List: 1 x Transmitter 1 x Collar 1 x Manual