Earfly Bluetooth Headphones Wireless V4.0 Sport Stereo Bluetooth Earbuds In-Ear with Noise Cancelling Headphones with Mic for iPhone 6/6s/6s plus/6plus, Samsung Galaxy S7/Edge and Android Phone TWO DEVICES CONNECTED: The HV-930 is capable of having two devices connected to the headset at the same time. This will give you the freedom of using call waiting between calls on both of your connected phones. PERFECT CALLING DESIGN: Answer/ Make/ End/ Waiting/ Reject When there is an incoming call, the headset will ring and vibrate, Briefly press the VOLUME DOWN button to stop vibration, Briefly press the CALL button to answer the incoming call. LONG USE TIME: Bluetooth Headset can deliver up to 8 hours of play time and standby for 16 days for two hours full charging. UNIVERSAL COMPATIBILITY: Compatible for iPhone 6s / 6s Plus / 6 / 6 Plus / SE / 5s / 5c / 5, iPad (4th generation),iPad Air / Air 2, iPad mini / mini 2 / mini 3 / mini 4, iPod nano (7th generation), and iPod touch (5th generation) , Samsung Galaxy S7 / S7 Edge/ S6 / S6 Edge / and other Samsung device. Ztent Please feel free to contact us first if you have any problem. we will get back to you within 12 hours provide friendly, easy-to-reach support.