Best earbuds for sport, running or gym workout Bluetooth 5.0 Up to 9 hours of playtime IPX7 Water-resistant & sweat proof Frequency Response - 20 Hz - 20 kHz Passive noise cancellation Compatible w/ all Bluetooth devices Microphone & Calls Management With the XR500 Bluetooth Headphones from TREBLAB, nothing will get in the way of you and your music. Enjoy the freedom of movement with wireless Bluetooth technology and secure fit.