Most of those are counterfeit knockoffs and the buttons are unreliable. It's safer to buy an older, pre-VPAM variant of the 300 or 991 models.
Most of those are counterfeit knockoffs and the buttons are unreliable. It's safer to buy an older, pre-VPAM variant of the 300 or 991 models.
You can turn off VPAM though, why would you not want it?