New models! Plugfones function like traditional earplugs and protect your hearing, but have the added benefit of audio. These earplugs are ideal for use in construction, factory work, landscaping, mowing the lawn, and more! Plugfones designed these earplugs for anyone that works or spends their personal time in a noisy environment. Listen to audiobooks, music, and more all while protecting your hearing with Plugfones! Choose from either the Guardian Black Earphones or the Guardian Plus. The Guardian Plus Model includes a noise-cancelling microphone. This allows you to use your Plugfones for making calls. These models also include one set of foam plugs and one set of silicone plugs. For replacement plugs, click HERE. NRR of 23 dB with foam plugs and 26 dB with silicone plugs.