I've used this since 1.5 years for sweets (basically daily...). So I take out a few sweets and lock it for a few hours, so that I don't have to fear that I over

I've used this since 1.5 years for sweets (basically daily...). So I take out a few sweets and lock it for a few hours, so that I don't have to fear that I overeat. It works really well and I'm really happy about it. Also, I didn't have to change the batteries once (well, you put in 4 AA batteries but still nice that it's no energy sink).