Last up to 10 times longer duracell is the number 1 brand when it comes to producing long lasting batteries and this bumper 16 pack is no different whether youre powering your camera games controller remote etc youre guaranteed to get hours upon hours of use what is duralock even when batteries arent in use they start losing their power duralock batteries on the other hand preserve storage power for up to 10 years to make sure you get the absolute most out of them