Handcrafted by artisans Copper Patch, with its anti-bacterial, anti-microbial and self-sterilizing properties, kills germs and bacteria on the go, keeping the phone surface germ-free! No recharging, or replacement required. Heating, dents, scratches or discolouring do not affect the lifespan or performance of copper patch. If well handled, copper patch has a durability of a lifetime. Not suitable for phones that heat up too quickly.