The product is easy to install and move, and will not damage the wall. You can customize the position of the clock according to your needs. how to install? Step 1: Use a hammer to nail the nail on the wall, and then hang the clock on the wall. Step 2: Hang the paper clock on a nail and adjust the position according to your needs. Step 3: Take out the paper on the back of the acrylic mirror and install it. Step 4: Tear off the protective film on the mirror. Step 5: Fix the hour and minute hands at the positions you need. Step 6: Tighten the nut. Step 7: Install the AA carbon battery as a clock and adjust the time of the quartz gear button. Step 8: Put the wall clock back on the wall. well done! You can now enjoy your work. Note: There is a protective film on each surface of the mirror. It may look scratched. But the scratches are only on the protective film, and the mirror is still intact. Please tear off after installation! Do not turn the hands by hand, but use the clock buttons to move the clock. If you have any questions, please contact me and I will reply you in time. The wall clock has a 6-month warranty. It is harmless to the environment and health. If you have any quality problems, please contact me and we will provide you with a replacement and/or refund.