The LogiLink Ultra Power Alkaline batteries are perfect for MP3 players, cameras, toys or other household device with reliable and long lasting energy. Alkaline technology ensures power for high drain devices 0% Mercury and Cadmium, free from harmful heavy metals Voltage: 1.5V Capacity: 650 mAh Shelf life: Up to 5 years Chemistry composition: Zinc, EMD, Potassium hydroxide, Graphite Package content: 4x AAA Alkaline batteries