Walkers Silencer R600 26dB Ear Buds Gray. The closed valve helps ensure the ear buds will remain clean and not get dried out. The long-lasting ear buds provide a noise reduction of up to 26dB. The Walker's Silencers can be recharged using the built-in USB port making it easy to keep a spare set. They fold down to the size of a match rolled down for compact storage in a glove box backpack or trouser pocket. Constructed of high strength hypoallergenic polyurethane the ear plugs are fully reusable and easy to recycle. The Walker's Silencers are made to fit the average ear not a specific size. Walker's Silencers are rated to handle loud noise without sound compromise. Walker's Rechargeable Silencers have a Noise Reduction Rating (NRR) of 26dB. Hearing protection should be an integral part of any comprehensive safety program. Walker's recommends the Walkers Silencers be used in conjunction with a Walkers noise barrier suppression system. This will ensure the ear plugs are fully retracted by the time the hearing protection is needed. The Walkers Silencers should not be considered an exact fit. The bottom third of the ear bud should be tapered from the bottom to the top. This will help to ensure the ear buds do not get hung up in the ear canal. The ear bud should fit snugly in the ear making sure the bottom is fully inserted. This will help to provide more efficient noise reduction. Specifications for Walkers Silencer R600 26dB Ear Buds: Manufacturer: Walkers NRR: 26 dB Quantity: 1 Pair Size: One Size Color: Gray/Black Included Accessories: Standard Condition: New Battery Type: Rechargeable Package Contents: Walkers Silencer R600 26dB Ear Buds Standard Walkers GWP-SLCRRC2: Silencer R600 26dB Ear Buds Gray