With the same click feel and 90% noise reduction* compared to classic mice M220 SILENT offers a quiet experience for yourself and those around you. It has a long-lasting 18-month battery life with auto-sleep and a powerful 10-metre wireless range** with 128-bit encryption between the mouse and the receiver. Plus its small size is perfect to toss in a bag and go. Just plug the tiny USB receiver and it works with Windows Mac Chrome OS or Linux. Finally the Logitech Advanced Optical Tracking is designed for smooth and precise moves on almost any surface. N/AN/A*Sound level comparison with Logitech M170. Measured by an independent lab and verified by Quiet Mark. **Actual battery life and wireless range may vary based on your use.