Caldwell E-MAX Shadows 23 NRR – Electronic Hearing Protection with Bluetooth Color: Flat Dark Earth. The E-Max Shadows are Bluetooth, rechargeable electronic ear plugs designed to go where you go, play all your music, and keep your ears protected. Dual microphones provide directional clarity and come equipped with easy to use touch volume controls. The charging case comes with an integrated lithium battery. Easily connect to your mobile device with Bluetooth so you can seamlessly transition between listening to media and shooting The E-MAX Shadows automatically shut off after 4 hours of inactivity, which is displayed on the illuminated on/off indicator The included case duals as a charger and storage compartment. Includes: (1) Pair of Caldwell E-Max Shadows FDE (1) Hard Charging Case (1) Soft Storage Case (1) Charging Cord (6) Interchangeable Ear Tips. Life is for living.