Wireless Headphones - with microphone, headset, around the ears, 3,5mm Jack, Bluetooth 5.0, voice Assistant, track shuffle, with volume control, frequency range: 20 Hz-20000 Hz, sensitivity: 100 dB/mW, impedance: 34 Ohm, converter: 40mm, removable cord length of 1,2m, battery life of up to 50 hr(s) Enjoy listening to music without unnecessary cables. The Panasonic RB-M300B, Black wireless headphones excel in comfort. These Panasonic RB-M300B, Black Wireless Headphones have Bluetooth technology for wireless connection to your device. Say goodbye to annoying cables. Using a frequency range of 20 to 20000 Hz, you can enjoy knowing that you won't miss a note of your favourite song.   These wireless headphones also have a microphone. These wireless earphones from Panasonic have 5.0 Bluetooth. The volume of music and videos can be changed using the control wheel. Songs can be switched easily using the controller. A fully charged battery will be able to last 50 hr(s)....