It is brand new and is 7". It is wall mounted and not battery operated. Start your day off right with this sleek black digital alarm clock/calendar, designed to help you stay punctual and organized. Featuring a clear, large display for easy reading, it offers a standard alarm clock function, along with a calendar to keep track of your days. With twelve distinct alarm options, you can choose your own unique wake-up sound to help you jumpstart your morning routine smoothly. Whether it's for your nightstand or desk, this unbranded timepiece is a practical addition to any space.