Check the listing for details. 2pcs Ultrasonic Anti-Bark Dog Training Device Stop Barking Control Gentle Stop. Condition: New. Listed at 12.29 USD. Features:Advanced Dog Obedience Training Equipment：Beyond your average clicker training for dogs, this anti-bark control device helps train good behavior and reduce bad habits like barking, digging, clawing, biting, scratching, and getting on furniture.Control Your Dog and Deter Others：Our barking control devices are designed to emit an sound that only dogs can hear. And our dog bark control uses two transmitters that deter unfriendly dogs.Pet Safe and Owner Friendly Design：Lightweight and portable, our handheld dog bark control system stimulates dogs through sound that humans can’t detect and won’t hurt the auditory sensors of pets or other animals for safer daily training.All-Purpose Outdoor and Travel Use：From the dog park to the car or to your favorite hiking trail, our electronic dog training clickers are easy to take with you when you’re walking, hiking, jogging, cycling, or staying active around other people or pets.Ultra-Bright (Built-In Flashlight) ：This anti-barking device not only helps improve natural behaviors but also keeps you safer in the dark with a bright LED flashlight built into the front. Great for nighttime walks or in low-light conditions.Specifications: Product size: 142 * 63 * 38mm Battery: 9V Mode: 1. Push to Light, white light always shines brightly 2. Push to I, keep pressing the NO key, and the white light will remain on 3. Push to II, keep pressing the NO key, white light flash+infrared laserPackage included:Ultrasonic dual head dog driver * 2 English instruction manual * 2Attention: This product does not contain batteries