Mouse Logitech Retail M720 Triathlon, Bluetooth Smart + 2.4GHz Wireless Dimensions SEE VISUAL Mouse (height x width x depth): 115 mm x 74 mm x 45 mm Weight: 135 g Nano receiver (height x width x depth): 14.4 mm x 18.7 mm x 6.1 mm Weight: 18 g System Requirements Bluetooth Smart: Windows 10 or later, Windows 8 Mac OS X 10.10 or late Chrome OS Android 5.0 or later Unifying Receiver: Windows 10 or later, Windows 8, Windows RT, Windows 7 Mac OS X 10.05 or later Chrome OS Internet connection for software download, USB port. Technical Specifications Connection Type: Bluetooth Smart and 2.4GHz wireless connection Wireless range: 10 m* *It may vary based on use and computing conditions. Indicator Lights (LED: Battery LED Connect / Power: Yes, on/off switch Battery Details: 1 x AA Battery life: 24 months* *Battery life may vary based on user and computing conditions. DPI (Min/Max): 1000± Sensor technology: Logitech Advanced Optical Tracking Sensor resolution: 1000 dpi Scroll Wheel: