Caldwell E-Max Power Cords Bluetooth Earplugs - The E-Max Power Cords are Bluetooth enabled earplugs that allow you to listen to your favorite music on your mobile device all while protecting your hearing on the range or even while doing chores like mowing the lawn. Complete with high-quality stereo sound and a corded design that keeps them together, these earplugs are rated with a 22dB noise reduction rating. Bluetooth Compatible With Mobile Or Other Capable Devices For Music Or Phone Calls Micro SB Rechargeable With 6 Hour Battery Life Per Charge Auto-Shutoff After 4 Hours Without Touching Controls Adjustable Ambient Sound Amplification Corded Design Keeps Earplugs Together 22dB NRR High Quality Stereo Sound Multiple Size Tips For Custom Fit Illuminated On/Off Indicator