Nhẫn Đeo Ngón Tay Thông Minh Jakcom R3F Cho Điện Thoại Nfc

Jakcom r3f smart ring combines 3 elements jewelry health technology

Function:
1. Health module - volcanic magnet. Alleviate seizures, calm the nerves, calm the work of the heart, fix the ears and eyes, reduce asthma.
2. Health module - energy rock fir (far infrared). Improving the krebs cycle, Increasing energy, Endurance, Power, Withholding electromagnetic waves from computers, Telephone or electrical equipment.
3. Two nfc two-inti chipsets (i & ii position). Cell phone keys, start fast, share information, business cards, whispers, personal records (Schedule, account, memo), sharing links, sharing cloud networks, smart door locks, unlocking screen locks.

Feature:
- titanium alloy amorphous. Strong, anti-corrosion, dark, allergic free, suitable material for jewelry other than gold and silver
- 18k pink gold (for white ring). Pink gold is made of pure gold, copper, silver and zinc. Charming design, popular in the international jewelry industry
- epoxy crystal ceramic. Health elements, improving human metabolism, increasing blood circulation. Safe and comfortable zirconia ceramics, resistant to scratches. Each material passes 120,000 times polishing and shooting high temperature 145 degrees celsius
- volcanic magmatic rock of cotopaxi. Thousands of years of geological movement give many striking abilities
- the energy stone fir (far infrared) is made by nanotechnology in korea. All materials are extracted from natural minerals so that they can release distant infrared rays, scarlar energy, negative ions.
- high-speed nfc chip with 106 kb / s data transmission and 100,000 writing resistance cycles, Can store data for 10 years, Data security & stability
- ip68 waterproof dustproof anti-drop
- compatible with android & windows cell phone
- 7.9mm width ring 1.8mm thick

Ready black: 7-8 - 9-10
Ready white: 8-9 - 10-11 - 12
Empty: 7w, 11b, 12b (july 20, 2020)

Please confirm thread size in the image before