Comes with 12 scent pads

The modes differ in safe noise levels

You can place you hand inside of the tank to thoroughly clean and disinfect

Combined modes

Pack of 7 unwrapped pairs with convenient metal Carry Case

3M™ Peltor™ Optime™ II Helmet Attach Earmuff H520P3GS/E (SLC80 29dB, Class 5) Archived Comes with 12 scent pads3M PELTOR Optime II Earmuffs, H520P3GS E have been developed for demanding noise hazard environments. A suitable choice for environments with substantial industrial noise or construction machinery, like airports and agricultural work. Get high level hearing protection that muffles even extremely low frequencies with 3M PELTOR Optime II Earmuffs, H520P3GS E. Theyre ideal for use in loud, demanding environments with substantial industrial noise such as