NFC Multifunctional Intelligent Ring Waterproof Smart-Ring For All Android Technology
- Made of premium materials, it is strong and durable for long time.
- Ultra sensitive and ultra strong read and write ability, good performance.
- Able to connect with a smartphone through Near Field Communication (NFC) to complete performing and sharing data. Built-in with NFC chip, it can only be connected to a smartphone with NFC function.
- Designed with high level water resistance, it can be used without any power supply.