This worked for my dog from the first use, and I used it for about a month. Functionality confirmed. The perfect training collar to prevent nuisance barking. Features beep and vibration modes, with adjustable sensitivity and intensity. - Product Name: Dog Anti-Bark Training Collar - Modes: Beep mode, Vibration mode - Sensitivity Levels: 1-7 - Vibration Intensity: 0-8 - Static Shock Intensity: 0-8 - Battery Level: 1-4 - Functionality confirmed, instruction manual included - Type A to Type C charging cable included - Please check the 5th photo for confirmation. There are small scratches and scuffs. - The collar is unused (Only used attached directly to a harness)