Wireless connectivity with 2.4Ghz and Bluetooth technology ensures reliable wireless connection to your PC, desktop, or MacBook Designed for right-handed users Tested ergonomic design allows for more natural hold to significantly minimize strain 800 / 1200 / 1600 DPI resolution Optical Tracking technology provide enhanced sensitivity for fluid and precise tracking on various types of surfaces Five buttons (including a scroll wheel) make selection and scrolling easy Next/previous buttons were added to make webpage browsing experience more easy and convenient for people who work for long hours Power saving mode halts the power supply if the mouse is continuously idle for eight minutes - just press the right or left button to wake the mouse