User-friendly: With an LED power digital display function, you can easily and quickly know when to charge this neck hanging earphone.Good performance: This sports wireless headphone supports HiFi and stereo sound and can provide a clear sound.Easy to operate: This bluetooth-compatible 5.0 earphone adopts a button operation design, allowing to quickly adjust the volume.Noise reduction: With CVC 8.0 noise cancelling design, this wireless neck hanging headphone ensures a clear call.Waterproof: With IPX3 water resistant design, this wireless sports headphone is not afraid of sweat. It is a great choice to wear during sports.Specification:Bluetooth-compatible version: 5.0+EDR.Sensitivity: 101.7dB±3dB.S/N rate: 95dB.Charging current: 5V-1A.Size(LxWxH): Approx. 115x20.5mm/4.52x0.81 inch.Cable length: Approx. 200mm/7.87 inch.Material: ABS.Battery: Lithium battery, 500mAh(Built-in).