The BattleTag is a player-created name that serves as your Battle.net title. It is used in all Blizzard games, as well as on their forums and community websites. Players create a name of up to 12 characters, and this becomes their official title on Battle.net. Your BattleTag is what other players see on your Diablo III characters, and what appears on their Friends List.
A digital camera records and stores photographic images in digital form. Many current models are also able to capture sound or video, in addition to still images.
A pen camera is a handy surveillance tool, but only if the battery is fully charged and ready to go. Properly maintaining your pen camera's battery and ensuring the device is at its maximum charge level will ensure that you're able to get the most out of its recording abilities and that the device operates effectively for as long as possible.