ChiTronic Newest Magic Smart Ring Universal For All Android Windows NFC Cellphone Mobile Phones,Black,Ring Size 62.8mm(Girth)

• Lock and unlock your Smart phone or tablet quickly, hide the app when you leave your smart phone alone
• Share & Transfer information (send the private message/Picture/business card/ website link to the person you want to share by a simple touch)
• 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.
• Water Resistant and No charging required
• Support All Android and Windows NFC Mobiles. Size Chart please check the image