Plugfones Guardian Plus: Earplugs with audio. The Guardian Plus features interchangeable safety-rated earplug tips with SoundSeal Noise-Suppressing Technology, which acts as a barrier between you and everything you don't want to hear. The built-in Isotalk Noise Isolating Mic and Quickdraw Easy Access Control make it simple to take calls and control your audio as you work. What's Included: Plugfones Guardian Plus with built-in IsoTalk Noise Isolating Mic and Quickdraw Easy Access Control, one pair of interchangeable ComforTiered Silicone Plugs, one pair of interchangeable ComforTwist Foam Plugs, waterproof case, cable management clip, and qSoundSeal Noise-Suppressing Technology that minimizes environmental noise to give you an immersive, unparalleled listening experienceInterchangeable ComforTiered Silicone Plugs with an ANSI-certified Noise Reduction Rating (NRR) of 26 dBInterchangeable ComforTwist Foam Plugs with an ANSI-certified Noise Reduction Rating (NRR) of 23 dBIsoTalk Noise Isolating Mic is built-in to identify and silence environmental noiseQuickdraw Easy Access Control allows you to control audio and manage calls with ruggedized buttons to play or pause, answer or end calls, adjust volume, and progress through songsTuned speakerDouble-reinforced jackSweat-resistantIndependently tested and compliant with ANSI S3.19-1974 noise reduction standards and NIOSH criteria; meets OSHA max volume guidelines when used to OSHA regulations