Smart Rings NFC Multifunctional Waterproof Intelligent Ring

https://www.cafago.com/en/p-j3166b.html?Wareho....
Features:
Water Resistant and no charging required.
Lock and unlock your smart phone or tablet quickly, hide the app when you leave your smart phone alone.
Control applications, you can write a fixed process list ahead of the time, and the ring will start the applications each time by simply touch.
Share and transfer information, support all Android and Windows NFC mobiles.
Multi-functional NFC smart ring, the main function is to store and exchange personal information, as well as mobile content and personal privacy encryption unlock.
Functions: set up smart lock, card recharge, smart phone unlock, phone important file lock, transfer files.

Specifications:
Material: Stainless steel
Color: Black, Silver
Size: 6, 7, 8, 9, 10, 11, 12, 13, 14 (please refer to the size picture)
Transmission rate: 106kb/s
Working frequency band: 13.56MHZ
Storage space: 144BYTES
Chip: NFC chip
Product weight: 7g/0.2oz
Package weight: 10g/0.3oz
Package size: 3*3*2cm/1.1*1.1*0.7inch

Note:
Item color may show sight aberration due to different shooting light and monitor display.

Package list:
1* Smart Ring
1* User Manual