Size is approx: 5.6 by 3.8 by 1cmAdditional product info:- Attach it to the back of your smartphone to help hold it, or change the angle of the ring to use it as a stand!- This product does not completely prevent the attached smartphone from falling. Do not use it on smartphones or smartphone cases with glass surfaces, anti-fouling, or anti-fingerprint treatments.- For smartphones where the attachment area is a cover for battery exchange or memory card replacement, the cover may detach during use.- Clean the area where you will attach this product thoroughly before use.- Using the product with dirt or oil remaining will reduce its adhesive strength.- Depending on your smartphone, you may not be able to use it as a stand.