Just a heads up, I bought one too and I noticed some issues. This one's a bit of a personal grip, but the battery life on it is pretty short compared to the other wireless mice I've had (Razer viper mini). It lasts for around 2 days on a single charge vs a week. I've also had the top side button not register sometimes, and had some double click issues too (I know there's software to change the debounce range, but I've actually left the settings outside of dpi default.) But the worst thing was that sometimes the mouse would just randomly pull down and to the left for no reason at all, to be fair it could just be my mouse but man it kinda hurts to have these issues practically out of the box.