Wireless Headphones DeFunc TRUE Basic Red:Enjoy listening to music without annoying cables. The semi-closed construction guarantees clear sound, which sounds incredible. The DeFunc TRUE Basic Red Wireless Headphones are equipped with Bluetooth for wireless connection to your devices. Say goodbye to annoying cables. With a frequency range of 20 to 20000 Hz, you can be sure that you will not miss a note of your favourite song.   These headphones also include and internal microphone. These wireless headphones from DeFunc are equipped with 5.0 Bluetooth technology. The volume of your music can be adjusted with the control wheel. This model can even pick up your calls. This model is totally without wires, so true wireless. The package also includes a case for safer travel. These DeFunc TRUE Basic Red have a water resistance rating of IPX4. A fully charged battery will be able to last you 12 hr(s). DeFunc TRUE Basic Red Wireless Headphones Key Features Material of these wireless headphones by DeFunc TRUE Basic Red is semi-closed Beautiful red colour Volume control buttons Connection method is Bluetooth Wireless connection through Bluetooth gives you great freedom Fully charged battery life: 12 hr(s) These DeFunc wireless headphones have a microphone as well Every user is sure to appreciate the buit-in microphone. The microphone on these DeFunc wireless headphones will ensure flawless calling with your friends or family. The mic is built directly into the headphones. The microphones impedance can reach 25 Ohm. Its frequency ranges from 20 Hz to 20000 Hz.