Caldwell Youth E Max Pro Earmuff Hot Coral The Caldwell Youth E-Max Pro Earmuff Hot Coral has low-profile design for uninterrupted cheek weld and a compact folding design. It features easy to use push button volume controls with an illuminated on and off indicator. These earmuffs also have auto-shutoff after 4 hours without touching controls. They run on 3 AAA batteries which are included. These earmuffs are also compatible with Caldwell?s Rechargeable Lithium-Ion Battery Pack (sold separately) NRR; High quality stereo sound Easy to use push button volume controls Available in youth sizes and colors Illuminated on/off indicator Auto-shutoff (4 hours without touching controls) Manufacturer: Caldwell Model: 1108763 SKU: SI_1127196