OWIKAR Smart Ring R3F Android WP Compatible NFC Magic Ring Black Waterproof App Enabled for Nokia, Sony, Samsung, HTC, MIUI Smart Phones High-tech Wearable Intelligent Devices
Secret Protection: This Smart Ring can be the KEY of your phone even your house door(13.56mhz frequency door Lock). No need to charge and waterproof.
Control Smartphone: This Smart Ring can Automatic Launch Task of your phone no matter single or multiple. (Call ,Music ,Settings ,Application ,etc)
Health Module: Remove infrared ray and adjust body function by the FIR Energy Stone and the volcano magnet.