LOGITECH PEBBLE M350 SLIM SILENT WIRELESS SAND MOUSE Mouse Dimensions Height: 107 mm Width: 59 mm Depth: 26.5 mm Weight (with batteries): 77 g Nano receiver Height: 18.7 mm Width: 14.4 mm Depth: 6.1 mm Weight: 1.8 g Technical Specifications Sensor Technology: High-precision Optical tracking Sensor resolution: 1000 DPI Number of Buttons: 3 Scroll Wheel: Yes- Mechanical Scroll Buttons: Middle Button Unifying ready mouse: Yes Unifying ready receiver: No Battery: 18 months Battery type: 1 AA pre-installed battery Wireless technology: Bluetooth Low Energy Technology Wireless operating distance: 10 meters 1Wireless range may vary due to environmental and computing condition.