There is logitech mouse design for laptop and battery last around 1 year and it's auto shut down if don't use it for 1 min to save battery life, it will wake up by click a button. The switch on/off for mouse is old technology now. I had one before and I gave it to my wife and she still use it for her work and she love it so much (she hate company's laptop's dot whatever it call on the keyboard and no trackpad)
She love her Macbook air's trackpad so much and no need mouse. I love my macbook's trackpad and better than any PC brand ever I had due size of the trackpad.
