SportEAR Select-A-Fit 60 Pair Advanced feed back cancel Maximum noise reduction: -22dB Includes 5 interchangeable tips to customize fit 8X Normal Gain Programable with Dual digital chanels and 10 internal bands for fine tuning Advanced feedback cancellation technology protects against internal feedback 22 dB NRR AutoBlocker compression protects you from incoming noise (such as gunfire) 90 db and above 5 interchangeable tips to customize fit