1.Applicable Scenarios Traveling, customer visits, mobile office 2. Left and Right Handed The symmetrical curved design allows you to use it with both left and right hands and gives you a more comfortable and efficient experience than a touchpad. 3. Instant pairing and easy to use The USB receiver is small enough to stay in the USB port for easy mobility with your laptop, reducing the possibility of loss. When not in use, it can be stored in the mouse battery compartment. 4. Reliable wireless reception range of approximately 10 meters Model B175 Length 100mm Width 58mm Height:34 meters 95g (without receiver, without battery) Language Color: Black Battery Life. Up to 12 months continuous use System Requirements For Windows@10 or later Windows®8,Windows®RT,Windows®7,Mac Os X10.5 or later,Chrom Os , Linux® Kernel 2.6+