CALDWELL E-MAX SHOTS are earplugs in tan with a charging case. - Brand: CALDWELL - Color: Tan - Model Name: E-MAX SHOTS - Accessories: Charging case, instruction manual This product is the "E-MAX Shadows" electronic hearing protection earplugs made by Caldwell. Function: These digital earplugs, suitable for shooting, instantly suppress loud noises to protect your hearing while allowing you to hear ambient sounds. Performance: The Noise Reduction Rating (NRR) is 23dB. Features: Supports Bluetooth connection for completely wireless use. Included: A charging case is included, serving for both storage and charging. Used 5 times after purchase on Amazon. Used during shooting, these earplugs allow you to hear surrounding voices and footsteps while canceling out the sound of gunfire. You can also listen to music via Bluetooth on both iPhone and Android.