Been carrying my 320C RX/SC for awile, decided to keep track of the dot while the gun was holstered. When Seated the dot turned off like it was supposed to. However when walking or moving the dot stayed on a lot of the time. In fairness, I am using a holster the covers the sight and was made for an RMR which is a tenth of an inch less wide so the sight touches the kydex in a few spots. Also, the holster is for a railed regular compact and I am using the compact slide with the sc grip module since Sig doesn't find it important to actually make 320 parts available, at least grip modules and some mags). I have a regular 320C RX holster ordered and I'll see if that makes a difference. Still, this could be why some get three weeks of battery life and some get several months.