1. Made of quality material, durable to use 2. Material: ABS 3. Comfortable hand touch 4. Move freely in 10 meter area 5. Working distance: 10 metres 6. Need 2 x AAA alkaline batteries to support(not included) 7. Designed for notebook/pc users 8. Compatible with Windows Operating system 9. Changeable resolution: 800/1200/1600 dpi 10. Keys life: Over 1,000,000 times 11. Elegant and ergonomic design, Built-in energy saving system 12. Scroll up and down directly without moving your hands 13. Cover with mouse ON/OFF function
