If you puchase this at the same time as the Yapalong Package (https://www.bolsterhockey.com/product-page/yapalong-6000-2-pack) the shipping for an individual headset will be reduced and refunded.
 
Noise Cancellation: The Yapalong-6000 headset has built-in noise cancellation. Its microphone can extract the speaker’s voice from a noisy background and then transmits the voice without the noisy background.
 
NOTE: The bluetooth Yapalong-6000 headset is NOT compatible with either Yapalong-5000 or Yapalong-4000.
 
Headset specifications
Headset - BT Air Conduction
 
High-definition sound quality
Environmental Noise Cancellation (ENC)*
Loud (louder than bone conduction)
Does not cover the ears (enhanced local communication with the athletes)
Light weight
Comfortable to wear, even after many hours
Hygienic (no direct contact with the ear's auditory canal)
Long playing time
 
The BT Air Conduction headset also works well with other Bluetooth devices, e.g. cellphones. 
 
* ENC (Environmental Noise Cancellation) isolates the talker's voice from the background noise. ANC (Active Noise Cancellation) suppresses the external noises at the listener’s end. It is normally used on dual-ear headsets, not single-ear headsets. ANC is not applicable to BT Air Conduction headset because both ears of the user are exposed to allow enhanced local communication with the athletes.