Many talents... From the outside, the Card Safe Extreme Combi looks exactly like its twin brother, the Card Safe Extreme. Inside, you see the differences: The Extreme Combi has two compartments for bigger-sized memory cards and one compartment to safely store a battery or other smaller parts. Because: What"s the use of living through the best moments if the battery is empty and the backup battery has become wet? The battery compartment is sized 49 x 32 x 10 mm (1.9 x 1.25 x .39) and is suitable for many different types of batteries.