PEDLZ Bark Stop Collar - Rechargeable and Waterproof Dog Training Collar - Sound, Vibration and Shock Anti Bark Collar - 7 Intensity Levels for Small, Medium or Large Dogs 2018 UPGRADED BARK COLLAR CHIP - PEDLZ bark collar now uses state-of-the-art ultrasonic wave to measure distance precisely, in order to tell the difference between your dog's bark and other dogs' bark. With the latest upgraded bark detection chip, you won't have to worry about the dog collar being triggered randomly. MULTIPLE WORKING MODE - High technology processors are used to build the perfect dog barking control device! With 3 separated - but can be combined - working modes (sound, vibration and shock - no shock), along with 7 levels of intensity for each mode, you can rest assured that your dog will be trained to the core using this no bark collar. EASILY ADJUSTABLE - Whether your dog is a small Pomeranian, a medium-sized Husky, or even a gigantic Golden Retriever, PEDLZ will be the perfect fit for him/her! Our dog bark collar can be adjusted to your liking, and will fit your beloved dog no matter which size he/she is - small, medium or even large. ADVANCED SAFETY MECHANISM - The no bark collar will automatically deactivate and enter sleep mode if being triggered continuously for 7 times in a row, so as not to frighten or hurt your dog too much. Moreover, this training collar can be recharged easily in just 1 hour, and can last for 14 days straight. 30-DAY GUARANTEE - We are confident in the quality of our product, so confident that we're willing to offer you a whole 30-day guarantee. If there's anything that you're unsatisfied with, feel free to contact us directly within 30 days after purchasing for a full refund, or a new replacement for your dog collar. Your satisfaction is our ultimate goal.