Details  :  
- For noise levels up to 101 dBA
- Stainless steel band distributes weight for low-pressure fit.
- Noise Reduction Rating (NRRA Class A.)*: 26 dB. CS
- *The NRR may overestimate the hearing protection provided during typical use.
3M™ Peltor™ Optime™ 101 behind-the-head earmuffs fit well with most helmets, eyewear and other safety equipment.
For noise levels up to 101 dBA, these behind-the-head earmuffs provide effective hearing protection. - Stainless steel band distributes weight for low-pressure fit. - Earcup pivot points that tilt for optimum comfort and efficiency. - Liquid/foam filled earmuff cushions. - Color-coding for compliance sighting. - Noise Reduction Rating (NRR)*: 26 dB. CSA Class A. *The NRR may overestimate the hearing protection provided during typical use. 3M recommends reducing the NRR by 50% for estimating the amount of noise reduction provided. 3M is Leading the Advancement of Hearing Conservation™.
Specifications  :
- Bluetooth  :  No
- Brand  :  PELTOR™
- Case Quantity  :  10
- Catalog Number  :  H7B
- Color  :  Black
- Corded  :  No
- CSA Class  :  CSA Class AL
- Dielectric  :  No
- Earmuff Style  :  Behind the Head 
- Electrically Insulated  :  No
- Hearing Protection Style  :  Behind-The-Head
- Hearing Protection Type  :  Headband
- Material  :  ABS
- Metal Detectable  :  No
- Moisture Resistant  :  No
- Noise Attenuating Headsets  :  Yes
- Noise Reduction Rating  :  27 Decibel
Features : 
- Neckband style
- Excellent Attenuation at low and high frequencies
- Enable safe working environment for longer periods of time, up to 101dBA
- Two low mounting points provide great comfort
- #1 Selling earmuff in the world  
- NRR 26dB