Compatible with Apple iPhones Android phones tablets Kindle eReaders and any portable devices with a standard 3.5 mm jack.</br>Microphone with 1-Button call for clear calls and smartphone control</br>Support phone call FM radio MP3 player etc</br>Small light easy to conceal Loud and clear voice Long life battery</br>Easy and safe to wearClarity and high strength string help you to take out the earpiece from ear canal easily.</br></br>Product Description</br></br><p> Mini wireless earpiece is a micro-mini wireless inductive receiver which transforms audio signal through electromagnetic induction. These products make the covert communication possible when it is inconvenient to expose earpieces. earpiece is widely used in many departments .Using this device;You can hear the voice from the person other sideand the person of the other side can also hear your vioce.<br> <br> <b>How to use</b><br> 1.Open battery door install the battery perfectly and push battery door into battery box gently. Put the earpiece into ear canal by holding the handle and the slight sound of current indicate working order.<br> 2.Adjust the volume of drive equipment to reach satisfaction.<br> 3.Set mobile phone to automatic return or vibration.<br> 4.Put the inductive loop around your