When the mouse is in use it lights up.... When the mouse is idle, the light goes out and the mouse cuts off to save battery life. Moving the moues does not turn the mouse back on if it is idle too long. This is unlike most mice that stay on when they sit idle. This is an annoyance when you are working. I find the "electric eye" to be so-so. The light on feature seems a gamic, unless you need a mouse that lights up.
Verified purchase: Yes | Condition: New
Please read the documentation carefully. The ad says... blue tooth all over it, but it is not. the only connection is through the dongle. It is a comfortable mouse. The buttons are smooth.
Verified purchase: Yes | Condition: New
Not quite as comfortable as the blue track one, but I'm ready t...o order another one.
Verified purchase: Yes | Condition: New
Nice one
Verified purchase: Yes | Condition: New
I tried two cheaper mice... first and they both were frustratingly slow to respond.
Verified purchase: Yes | Condition: Pre-owned