· FORMULATED WITH 4X POWER BOOST INGREDIENTS: Duracell Optimum AA batteries contain 4X of Duracell’s patented POWER BOOST Ingredients vs Coppertop AA· OUR #1 BEST PERFORMING BATTERY: Duracell's Optimum AA battery is our best performing AA alkaline battery· RESEALABLE PACKAGE: Duracell Optimum batteries come in a resealable package for quick, easy access and storage· #1 TRUSTED BATTERY BRAND: From storm prep to holiday needs, Duracell is the #1 trusted battery brand for the moments that matter most· QUALITY ASSURANCE: With Duracell batteries, quality is assured; every Duracell product is guaranteed against defects in material and workmanship· AVAILABLE IN AA AND AAA battery sizes in 4 pack, 6 pack, 8 pack, 12 pack, 18 pack, and 28 pack