The AXIL GS Extreme 2.0 is the new and improved GS Extreme. Delivering 3 products in 1 it is like having Bluetooth earbuds, noise isolation headphones, and electronic ear muffs all in one product. With many improvements from our original GSX. Switch between hearing enhancement & protection mode to Bluetooth audio mode or use all three at the same time with independent volume controls to tune to your environment. 6X Hearing Enhancement for Normal Hearing to Moderate Hearing Loss 29 dB Noise Reduction Rating (NRR) 5.0 Bluetooth Audio for Studio Quality Audio & Hands-Free Communication Shuts Out Sounds at 85 dB or Louder Sport Fit Ear Hooks to Stay in Your Ear No Matter What Rechargeable lithium battery on lanyard 16 hours hearing enhancement & protection run time Compression at 85 dB