"IMPORTANT: By design, the volume on this product is limited to the OSHA-specified maximum volume of 82 dB. The volume will be lower than non-limited earbuds. This device does not have microphone or calling capabilities.No returns will be accepted for low volume, calling or microphone reasons.Approved for use at Lockheed MartinFocus on your work. We'll take care of the noise.Elgin’s Discord Volume-Limited bluetooth earplug earbuds are purpose-built for noisy, rigorous work environments where long hours and heavy use are the norm. EPA certified to meet ANSI standards, Discord Limited earbuds provide OSHA compliant hearing protection with a 25 dB Noise Reduction Rating (NRR) and 82 dB volume limit. Bluetooth 5.3 provides superior connectivity up to 50 feet.Read moreWith up to 14 hours on a single charge, the Ruckus Discord has been specifically designed to work as hard as you do. Crafted to work as hard as you do, the weatherproof enclosure blocks out dust and sweat conforming to IP65 level of protection by international standard IEC 60529. The replaceable medical-grade silicone ear tips provide all-day comfort and durability while being easily cleaned and the cable is reinforced with Kevlar for ironclad durability. Whether hard at work woodworking, lawn mowing, on a construction site, welding in your shop or just trying to tune out the engine noise from your motorcycle, our 8 mm speaker drivers deliver full dynamic sound while listening to your favorite playlist, podcast, or audiobook.   "