Great little laser level, I do my entire kitchen with it. The detachable base is a bit of a mystery, but not too much of an issue. The only issue I had was a user error I had early on when I figured the fact it was blinking means the battery was low. This really means that the device is too far off level and cannot internally compensate enough to get a plumb/level line and therefore needs to be adjusted (possibly when mounted on a tripod). The instructions probably describe this function clearly, but I'm more of a learner by doing.