Advanced Noise Reduction Technology: The for M20 Electronic Earplugs are designed to protect your hearing in loud environments. Ideal for hunting sports, these earplugs feature state-of-the-art electronic dampening technology that automatically reduces harmful noise levels while allowing normal conversation and ambient sounds to be heard.Comfortable and Secure Fit: Tailored for extended wear, the M20 earplugs offer a comfortable fit that stays secure during active use. the ergonomic design ensures maximum protection without compromising on comfort. and User-Friendly: Built to withstand rugged use, these headphones are both and easy to operate. With intuitive controls, users can easily adjust settings , making them a reliable choice for any outdoor sports enthusiast.Noise reduction value+NRR22Intuitive one click operationEquipped with 3-speed adjustable sound gain function to enhance auditory perceptionRechargeable, high battery lifeTwo sound modes (indoor and outdoor)Power on, power off, low battery promptCharging automatic shutdown, no operation for two hours automatic shutdownHigh portability, high comfort, and high compatibilityIPX-4 waterproof ratingDue to different batches, there may be differences in product printed text, which will not affect use.Colour:C:GreenMaterial:ABSPackage Contents:1 * Electronic Earplugs kitOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.