Pokemon Center Original Die Cut Round Ring Gengar 983A

Size is approx:  
7.2 by 4.8 by 1.0 cm  

Additional product info:  
Attach it to the back of your smartphone to support holding it or change the ring angle to use it as a stand. This product does not completely prevent the attached smartphone from falling. It cannot be used on glass surfaces, anti-fingerprint, or anti-smudge treated smartphones, or smartphone cases. For smartphones where the part to be attached is the cover for battery replacement or memory card replacement, the cover may come off during use. Please clean the area to which you are attaching this product before use. If used with dirt or oil remaining, the adhesive strength will decrease. Depending on your smartphone, it may not be usable as a stand. Smartphones are not included.