Reliable, wireless optical mouse with extra-quiet buttons. Comfortable, compact design. MultiMode function: can be paired with up to 4 devices at once (e.g., PC, notebook, tablet, mobile phone) . Connection modes: 2.4 GHz USB receiver/Bluetooth. Connections: 2.4 GHz. Bluetooth version: Bluetooth 4.0, Bluetooth 3.0. Operating range: Up to 10 m range, 360° coverage. Plug & Play. Buttons: 3. DPI: 1000. Height: 38 mm. Width: 98 mm. Depth: 61 mm. Weight: 55 g. Battery: 1 AA alkaline battery. Battery life: up to 9 months.