[DETAIL] In order to make the shipping cost cheap, this product has no battery, so you need to buy a 9V battery yourself. Features: 1. The barking control device is a safe and effective training tool, dog barking control devices is very safe for dogs, use normal sound and ultrasonic dog whistle, and are harmless to dogs. 2. This anti barking device can quickly train your dog outdoors or indoors, and it can change your pet's bad habit of barking, and guide your dog's uncivilized behavior. 3. Stop barking dog devices that are suitable for dogs of all sizes. Anti barking device - lighting: Slide the dog barking deterrent function switch to the "Lighting" position, can be used as a flashlight to facilitate walking your dog at night and light your way home. Anti barking device - training Dogs: Slide the dog barking deterrent function and switch to the "Train" site. The anti barking device will emit low-intensity ultrasound to help you correct excessive barking, fighting, and bad behavior. Anti barking device - Chasing Dogs: Slide the dog barking deterrent function switch to the "Chaser" site. Facing the dog for a few minutes, the flashlight of the barking prevention device will flash and emit high-intensity ultrasound, which will help drive away other dogs. NOTE: 1. We do not recommend these barking control devices for dogs under 6 months or over 8 years old. 2. This barking control device is invalid for dogs with hearing problems. 9V dry battery is suitable for this product [ATTRIBUTES] - Battery Included: No - Target Pet: Dog - whether electrical: Yes - Battery Included: No - Target Pet: Dog - whether electrical: Yes - Hign-concerned Chemical: None - Is Smart Device: No - Material: Plastic - Item Type: Bark Deterrents - Origin: Mainland China - Item Type: Bark Deterrents - Type: Dogs