70mm Universal Titanium Waterproof App Enabled Smart Ring NFC Smart Ring for Android NFC Mobile Phones Samsun Sony Black NO.12
- MULTI-FUNCTION: It can be used to communicate with the phone, listen to music, save all kinds of private information, unlock the phone, share information, and so on.
- NO NEED BATTERY CHARGING: The various chips are equipped with a wireless receiving module to quickly read the electromagnetic wave energy emitted by the reading and writing device, thereby converting the power required by the chip, without charging, and at any time.
- WATERPROOF, DUST-PROOF and FALL-PROOF: high waterproof level, dustproof and excellent resistance to fall and rolling resistance can be competent to the application requirements of any occasion
- HEALTHY ELEMENT: many kinds of trace elements in crystal ceramic can improve the human metabolism and effectively promote blood circulation
- NOTE: It does only work with Android devices using the NFC app.
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