Review on Silent Portable Wireless Shhhmouse i440: USB Receiver, Multi-Surface Operations, 3 DPI Levels - for Laptops, Computer, Mac, PC [Black & Red] by Gerardo Goodson

I sent the mouse back. I have another SHHH mouse for my laptop and it works great so I decided to try this one for my desktop. The sleep feature kicks in after less than a minute of inactivity and takes a few clicks to wake up. After two/three/four clicks, and no matter what I do, it responds. The most disappointing thing is that it cannot be turned off and SHHH has no software. I suspect this will drain the battery since the mouse itself doesn't have an on/off button. Good price and works as described except for the sleep function.