Duracell Ultra Alkaline Batteries, D

1.5 Volt. M3 Technology. The most powerful Duracell battery (vs. standard Duracell batteries, especially in high-drain devices). Power Check - A tester on every alkaline battery. Faster flashes (vs. standard Duracell batteries, especially in high-drain devices). Brighter light (vs. standard Duracell batteries, especially in high-drain devices). More sound (vs. standard Duracell batteries, especially in high-drain devices). What is M3 Technology? More Fuel - With even more active ingredients. More Efficiency - Reformulated to improve electron flow. More Power - Devices run longer and work better.