Good to know- Drag and drop between devices - this mouse lets you connect 2 devices at once- Streamline your workflow and customise shortcuts using the 4 programmable buttons- Connect without wires with Bluetooth or the USB dongle- There's no need to keep recharging or switching batteries - it lasts up to 2 years on one AA- Whether you're a lefty or a righty, the ambidextrous mouse is comfortable for everyone to use- The ergonomic design feels natural to hold, so you can stay focused all day