With the Logitech Marathon Mouse M705 you will continue.. and on. The mouse consumes much less energy than similar wireless mice from other brands, so you only need to change the battery once every 3 years. * And the mouse uses a small wireless receiver that stays connected to your computer so your mouse is ready to use where, whenever and how long. Plus, you fly with super fast scrolling through long documents so you will instantly find what you are looking for. Laser quality tracking lets you benefit from smooth, responsive cursor control. And the rounded shape for the right hand provides long-lasting comfort. *Battery life may vary depending on your usage.