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, anti-abrasion material. 3. Features sound and vibration modes; designed to be safe for pet training without causing harm. 4. Vibration intensity is adjustable across 6 levels, suitable for different pet behaviors and sensitivities. 5. Test vibration intensity on your hand first 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