Your initial combination should be something like 12345, so that the key would not be needed to initially open the safe.  The plastic bag containing the instructions and keys should not be secured as is.  Tape it to the side of the safe... much easier to open.  Battery cover should be simplified.  The latch is impractical since it made of plastic. It can easily break when attempting to open to replace the battery. Better if the key holder cover slides down over the opening.  It doesn't need to be secure because if it's closed, you'll need the combination!