Easy Install:Hooks included with the clock which ensures easy installation. wide slot in back for easy hanging, and equipped with Two holders, easy to stand on desk.Powered by 1 AA battery, ordinary Carbon Zinc battery, not Alkaline battery(battery is not included in the package). Note: Due to the difference between different monitors, the picture may not reflect the actual color of the item, Please allow the slight color difference! We always doing our best to provide the best service and reliable products for every customer, Thank you very much! Have a good day!