FORMULATED WITH 4X POWER BOOST INGREDIENTS: Duracell Optimum AA alkaline batteries contain 4X of Duracell’s exclusive POWER BOOST Ingredients, which deliver lasting performance in your devices (vs. Coppertop AA) OUR # 1 BEST PERFORMING BATTERIES: Duracell’s Optimum AA alkaline battery is our best performing AA alkaline battery RE-CLOSABLE PACKAGING: Duracell Optimum AA alkaline batteries come in a re-closable AA batteries pack for quick, easy access and storage GUARANTEED FOR 12 YEARS IN STORAGE: Duracell guarantees each Optimum AA alkaline battery to last 12 years in storage, so you can be confident they will be ready when you need them TRUSTED BATTERY BRAND: From storm prep to holiday needs, Duracell is your trusted battery brand. QUALITY ASSURANCE: With Duracell’s double a batteries, quality is assured; every Duracell product is guaranteed against defects in material and workmanship AVAILABLE SIZES: Duracell Optimum alkaline batteries with POWER BOOST Ingredients are available as AAA and AA batteries