13.5MHZ NFC smart rings 7-12 yards for your optional

Description:

1. Product Name: NFC Smart Ring
2. Carrier frequency: 13.5MHZ
3. Wireless Distance: 1.5CM
4. Working temperature: -50-80 °C
5. Waterproof rating: IP68
6. Material: gemstone, titanium, glass
7. Applicable phone: Andrews and WP phone
8. Dimensions: 7-12 yards
9. Color Category: White, black or customized colors
10. Titanium stainless steel ring arm: The most future
qualities, tough, corrosion-resistant, brightness luster,
never black, does not irritate skin, not allergic, it is the only
one with no impact on human autonomic metals, except
gold and silver the most suitable jewelry materials

Features:

1. Support APP lock, Unlock Screen
2. Automatic operation
3. Hide automatically
4. Magic business card
5. Internet link share
6. Passphrase of magic ring
7. Online file share
8. Key of intelligent door lock