The is a fashionable and wearable electronic product. It is able to connect with a smartphone through Near Field Communication () to complete function performing and data sha. Designed with high- resistance. It can be used without any . Embedded with chip, it can only be connected to a smartphone with function. Specification: Material: Stainless Steel Instructions for Use: First, check if your smartphone has function. It can usually be found in the system settings. If no relevant options are found, contact with the manufacturer post- support, or search on if the smartphone model has function and confirm its area. If your smartphone has function, turn switch, search for the , download and install Start the , perform actions according to the instructions. Since is a near field communication technology, make sure to place the top side of the chip right close to the area when reading to avoid the failure in reading and writing. Package Includes: 1 Piece