Features:nn-- Time, humidity, and temperature are displayed on the same screen, and the date is displayed by lightly pressing the button; 12/24 hour system.nn-- There are two installation methods, which can be placed directly on the desktop, and there are wall hanging holes on the back, which can be hung on the wall.nn-- Use USB plug-in or bring your own 3 AAA carbon batteries(not included battery).nnnnSpecification:nn-- Name: Alarm clocknn-- Material: ABSnn-- Power supply: USB Plug in or 3*AAA battery (not included)nn-- Size: 20.2 x 2 x8cmnn-- Color: White, BlacknnnnPacking included:nn1 * Wall clock