Review on Perixx PERIMICE-804 Bluetooth Vertical Mouse - Wireless Connection For Windows & Android, No USB Receiver Needed by Jason Marquez

A little delay from time to time.sometimes after you finish clicking, it freezes and does not respond for a second or two. Using it for a 8 hour day, it does it about 20 times a day. So it doesn't translate to all the time or alot. you just notice it. This is a good entry level upright mouse