Item Type: NFC Lighting Nail Stickers Material: ABS Color: Dark blue, white, light blue, red, yellow, purple, green Quantity: 7pcs Size: Approx. 1.2 x 0.8cm / 0.47 x 0.31in Function: NFC nail sticker is a high tech product that does not need power supply and can automatically flash when met the NFC signal. Put the nail sticker on the nail and put it in the NFC signal sensing area to automatically shine. Package List 7 x Glowing Nail Stickers 1 x Storage Box Please allow small error due to manual measurement. Thanks for your understanding. 1In addition to mobile phones, there are many other electronic devices have NFC function. 2The function is very simple, as long as you are using a mobile phone with NFC functionality, nails will shine. 3NFC intelligent nail sticker is a high tech smart product, it can glowing with the access control card, public transportation card, etc. 4Embedded smart LED light source, use mobile near field communications technology (NFC), no battery inside nail stickers. 5Favored by the majority of girls, which is can make you fashionable and special.