Riwbox XBT-80 is a energetic foldable bluetooth headphone, features with a 50mm large diameter aperture drivers and bulit-in high detail microphone. Wide frequency range reproduces precise deep base and high clarity sound. You can expect comfortable listening experience for both music playing or phone calls. Bluetooth 5.0 : Powerful 40mm speaker with the bluetooth 5.0 technology, providing you the needs for quality natural sound and strong bass while keeping convenient. Once you done the matching, you can save the hassle for matching again. Just power on the headphone and it will connect to your device. Connection status will be shown on screen of smart-phone, and voice reminder available for battery level. Noise isolating ear-pads : Ear protecting high elastic protein leather over ear noise isolation earpad : It is a soft but elastic ear-pad made by cutting edge technology. The use of protein preserves a silky touch to your ears and provides excellent ventilation still blocking out the environment noise. Long time wearing will never be a problem. Wire/Wireless mode : Switches are located at both sides of the headphone, you can easily have your control : go to next song, previous song, volume control when using bluetooth mode. Even when your headphone has run out of battery, you can still plug in the headphone Riwbox Bluetooth headphone XBT-80 fit the modern city lifestyle for everybody,no matter you are office worker or student,teenager or girls.Devices with all sorts of smart phones,tablets,computer or music player.