Weight: 85g ± 10g (w/o battery) Connectivity: 2.4G wireless via USB-A dongle Buttons: 3 buttons w/o programmable Buttons life: Left/right: 3,000,000 cycles, middle/encoder: 300,000 cycles, power: 3,000 cycle DPI: 1000 Sensor: LED optical sensor Battery Life: 6 months with AA battery Ship group: Mouse, warranty, user guide, AA battery *1