one of the 3 best in the Greek market. it would be good, for devices that are hard to open or break from frequent opening and closing (as they are made more and more cheaply), to prefer MORE DURABLE batteries to increase the intervals between changes and thus open and close them fewer times! think about it... personally, I only buy from these: ENERGIZER DURACELL TOSHIBA PANASONIC GP (I am ONLY mentioning those that make the most types and are available in our country)