- Can be used to share data by NFC wireless frequency communication technology.

- Functions: lock APP, edit and run script, share business card / internet link / text / online files.

- The shape is designed according to the international popular elements.

- No external power supply is required.

- Wearable and waterproof.


- With built-in 2 chips, one is in the crystal side of ring, the other one is in the other side. Different areas, different functions. So pls put the chips against the cellphone NFC part. Otherwise, it may not work.


Specification:

Frequency: 13.56MHz

Coverage: 1.5cm

Working temperature: -50~+80'C