NU Technology 9GBTBH07001 Wireless Bluetooth 3.0 Stereo Headset Echo cancellation & noise deduction technology Ergonomic bendable design with one touch NFC connection function Compatible with iPhone 3GS/4/4S/5/5S/5C/iPad2/iPad Mini/iPad Air and most mobile phones with Bluetooth function Integrate battery indicator on IOS 5+ or above mobile devices such as iPhone3GS/4/4S/5/5S/5C, iPad2/New iPad/iPad Air/iPad mini/iPad mini with Retina display Embedded microphone with 5 voice notification features (such as power on, power off, pair, pairing complete and incoming call) and solid & scalable stainless design