Features:- Enjoy Wireless Mobility- Listen To Your Music And Make Handsfree Phone Calls- Works With Any Bluetooth Enabled Laptop Or Mobile Phone- Led Light Effects- Bluetooth Stereo Headphones With Led Light Effects- Up To 8 Hours Of Listening Time On A Single Charge- Automatically Mutes Your Music In Case Of Incoming Calls- Multifunction Button, Volume Control And Low Battery Indication- Can Also Be Used As Wired Headset - Includes 3.5 Mm Audio Cable- Comfortable Ear Cushions And Adjustable HeadbandSpecifications:- Interface: Bluetooth V.5.0- Rf Transmit Power: 9 Dbm- Rf Receive Sensitivity: -85 Dbm- Supported Profiles: Hsp, Hfp, A2dp And Avrcp- Rechargeable 400 Mah Li-Ion Battery- Recharging Time: Up To 2 Hrs- Operation Distance: Up To 10 M In The Open Air- Speakers Frequency Response: 20 Hz - 20000 Hz- Signal To Noise Ratio: > 83 Db- Impedance: 32 Ohm, 105 Db Sensitivity- Microphone: 6 Mm, -42 Db Sensitivity- Operating Power: 3.7 Vdc, Up To 40 Ma- Dimensions: 175 X 177 X 78 Mm (L X W X D)- Usb Charging Cable Length: 0.5 M- Net Weight: 150 G