I really wish I could give this lock five stars, because it looks very nice and works very well ... when it has electricity. Sadly, I have owned this for approximately five and a half months and I've had to replace the batteries twice, including this morning. I did update the firmware once I replaced the batteries but, since Kwikset doesn't tell you why they want you to update the firmware, I have no idea what it was intended to fix (hopefully the dreadful battery drain issue). I can't recommend this to a friend unless and until the battery issue is fixed. I could understand an update once a year (or even every six months), but this is ridiculous!