Pyramex VGPME20: Pyramex has become one of the worlds leading manufactures of safety-related products. With over 25 years of pioneering safety by delivering innovative and stylish products. This particular item is an individual pair of VGPME20 Sentinel Electronic Earmuff\'s, which features a 26dB Noise Reduction Rating. Additionally, this unit features slim profile ear cups, a front-facing microphone, and operates on 2 AAA batteries (not included).