JAKCOM R3F Amorphous Titanium Alloy Smart Ring, Waterproof & Dustproof, Health Tracker, Wireless Sharing, Push Message, Inner Perimeter: 57.1mm(Black)

1. Health module-remove infrared ray and adjust body function.
2. Jakcom R3F NFC smart ring compatible with Smartphones of Android/WP systems having NFC function.
3. Full U.S. sizes, suitable for different finger size.
4. Improve human health and prevent disease.
5. Simulate IC cards and ID carsd-you can use R3F as house door key, elevator card, parking card, attendance machine, payment cards, Pos machine, Supermarket card, Bus card, Metro card.
6. Program lock: Your mobile phone only opens for you.
7. Automatic running: Convenient and fast fashionable experience.
8. Start hide: The highest level personal privacy protection.
9. Business card share: Leave your contact information stylishly.
10. Whisper: Communication requires just one interaction.
11. Link share: Information consulting, enabled by one click.
12. Network disk sharing: Goods should be shared.
13. Made of high fast dual core NFC chips, data transmission fast, and storage data for long time, it is safe and stable.
14. Kindly reminder: Do please make sure your phone supports NFC function.
15. Not support Bluetooth.