Purchased with the idea of lighting over my computer desk. Didn't work as imagined since the balance of the lamp itself prevents tilting it too far over the base.  This topples easily using the touch sensor as well.  I had mime just a couple of days past the return Policy when it wouldn't shut off unless I disconnected by the USB.  Never used too long at a time but, the sensor wasn't reliable either.  It was too sensitive or not sensitive enough.  Don't expect much....