Condition: New<br />Colors:White \ Pink \ Blue<br />Material: printing ink + chip<br />Only for phone have NFC function<br />First、 stick it on your nail and adjust the size<br />Then apply nail polish on it<br />How to make it work?:Your phone must with NFC function and open it.Then put the tip on the battery area.Keep the phone awake.It will flash.Please contact with us if still can't work.