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The Logitech V450 Laser mouse for laptops is quite simply the best mouse I have ever had. Being made for a laptop it natuarally is smaller than a normal mouse but it still feels confortable to hold. The buttons and of a good length so are easy to click on. The scroll wheel is not too stiff while not too slack most noticeably seen is cheaper mice. The mopuse comes with a battery and it says that it will last for a year. but I have found the battery lasted about 8 months with heavy useage so on the whole it will last a while not mattter how you use it. If you wish to leave your usb transmitter on a desktop computer all the time you can use the on off button on the bottom of the mouse. The tranmitter neatly tucks away into the bottom of the mouse when not in use this also automatically turns on an off the mouse. On top of the mouse it has a light which will indicate if the battery is low. The mouse also comes with a material carry case so that the mouse does not get scraped. The sofware that comes witht he mouse hass many settings to find tune the speed settings, button use. The software is not nessasary though, the mouse is found straight away on vista and windows 7. The mouse is suitable for all kinds of use and also very good for gaming while it's not as sharp as a gaming laser mouse it's is certainly better than the average optical mouse for gaming.