PRODUCT DESCRIPTION: The Jakcom smart ring model R3F is a wearable electronic components, operate the mobile function and share the data by NFC wireless frequency communication technology , the functions of the advanced design as following: Private Note, Screen lock, APP lock, Quick start, share business card, share internet link, share the text and share online file. Original Health Modulecan improve human performance effectively. The product shape is designed according to the international popular elements, created by the pure medical titanium, no need to charge, high waterproof, and suitable for any people at any time. SPECIFICATIONS: Model:JAKCOM-R3F Frequency:13.56MHZ Range to cover:1.5cm Work temperature:-50~+80℃ STRUCTURE: Position with "I" is chip area, Position with "II" is the second chip area, different areas for the different functions of application ( put on correctly to ensure the Letter “I” or “II” is in the center of finger guarantee the best read-write function of each chip。 And also inlay two Health Module below letter “I”and “II”, It specially selects Cotopaxi volcanic magnetic rocks magnet and Korea Nano FIR energy stone, it can improve human performance effectively. (*) Refer this link for software and instructions "http://www.jakcom.com/ins/R3F/index.html"