The 3M PELTOR Optime III Ear Muffs are an ear protection device developed for use in extremely noisy environments, such as airports, ship engine rooms, power plants, and printing presses. The 3M personal protective equipment is intended for use in work environments only. This 3M personal protective equipment must be used in accordance with legal regulatory requirements and relevant occupational health and safety standards, as well as all user instructions, warnings, and limitations accompanying each product. It is essential to follow instructions and government regulations regarding the use of each product in order for these products to protect the user. Improper use of personal protective equipment can result in injuries, illnesses, or death. Users should seek advice on occupational health and safety from competent personnel in order to select and use the products correctly. For more information about the products, please visit www.3m.com/es/seguridad