VIRAL bluetooth headphonesbluetooth headphones dedicated to smartphones, tablets, compatible with Bluetooth 4.2 (Chipset: JR)control via smartphone or buttons on the headphone housingmodes: bluetooth, AUX, phone callvery high-end drivers guarantee crystal sound4 buttons - used to answer, end calls, play and pause music, adjust the volumeprotruding buttons of different shapes make it easy to operate without having to remove the headphonesquick folding/unfolding of the headphones makes it easy to travelfrequency response: 20Hz-20kHzimpedance: 32 ? sensitivity: 115±3dB /1mW (at 1kHz)power 40mWbuilt-in 150mAh battery (charged from micro USB)speaker diameter: 40mmmicro USB connector (used to charge the battery)has a switchcovered with rubberbuilt-in indicator LEDsbuilt-in microphone (phone call function when connected to the phone via bluetooth)AUX (when the battery runs out, it is possible to listen via the included 3.5mm mini jack cable)The set includes a USB(M)->microUSB(M) cable and a 3.5mm (M)->mini jack cable3.5mm(M)