（PLEASE CONTACT ME IN TIME IF YOU HAVE ANY PROBLEMS DURING USE,AND I WILL REPLY TO YOUR EMAIL WITHIN 24 HOURS!!!） A:Does this earphone have a microphone? Yes. The headset has a built-in microphone, you can use it to make phone calls with friends. B:Can headphones be connected to a desktop computer? Yes, there are two data lines in the box. One is the charging line, the other is the audio line. You can use the audio line to connect your computer. C:Can this be used as a gaming headset? Yes, of course. If your computer doesn\'t have Bluetooth, you can use an audio cable to connect to your computer. PRODUCT PARAMETERS Product model: EK-MH7 Effective distance: 10m Working hours of the headset: About8.0-10.0hours Charge time of the headset: About2.0hours Standby time: About120.0hours Battery capacity: 250mah Bluetooth version: 5.0 Product color: Sivery/Golen FUNCTION DESCRIPTION Hands-free calls: Support Audio line input: Support FM: Support Card function: Support Compatible mobile phone: Compatible with Android,iphone,Microsoft and Symbian systems, 99% of mobile phones with Bluetooth features. FUNCTION DESCRIPTION 1,TF card plug 2,Volume-(long press);previous song(click) 3,Power on/off(long press);Model switch(double click);Play/pause(click on music play model );FM search(click on FM model);answer/end call(click on call model)/reject call(long press on call model) 4,Volume+(long press);next song(click) 5,LED charge display(charging:red,full charge:blue) 6,Charge port(micro usb) 7,3.5mm AUX line input port