Logitech M720 TRIATHLON Multi Device Bluetooth Mouse

Connection Type: Bluetooth Smart and 2.4 GHz wireless connection (Internet connection for software download, USB port) Keys: 8 Optical Sensor Resolution: 1000 dpi Others: Wireless range: 32.81 ft (10 m) 3It may vary based on use and computing conditions. Scroll wheel: Yes Button: Number of buttons: 8 Buttons built to withstand up to 10 million clicks Tracking Method: Logitech Advanced Optical Tracking Color: Black Dimension(LxWxH): Mouse: Height: 4.53 in (115 mm) Width: 2.91 in (74 mm) Depth: 1.77 in (45 mm) Weight: 4.76 oz (135 g) Nano receiver: Height: 0.57 in (14.4 mm) Width: 0.74 in (18.7 mm) Depth: 0.24 in (6.1 mm) Weight: 0.63 oz (18 g) Battery Life: Battery Details: 1 x AA (pre-installed) Battery life: 24 months may vary based on use and computing conditions. Weight: Mouse: Weight: 4.76 oz (135 g) Nano receiver: Weight: 0.63 oz (18 g) Warranty: 01 years warranty