Fangrui Product Details 1. Hxsj T32 Ergonomic Design 2.4g Wireless Vertical Mouse 2. Features: 3. Can Be A Key Control: Power Switch. 4. Enjoy 2.4g Wireless Technology, Office Casual Games Applicable. 5. Innovative Aluminum Side Roller Design. 6. Vertical Side Horizontal Operation Design, Bid Farewell To The "mouse Hand". 7. Wireless Receiver, Can Be Received Within 10 Meters Of Wireless. 8. Specifications: 9. Brand: Hxsj Vertical Mouse 10. Model: T32 11. Color Classification: Black Silver 12. Wireless Technology: 2.4ghz 13. Wireless Distance: 10m 14. Micro Switch Life: 10 Million Times 15. Number Of Keys: 6 Keys 16. Battery Type: 1 X Aa Batteries (not Included) 17. Work: Photoelectric 18. Product Weight:93g 19. Item Size: 12.5x8x5.5cm 20. Packing Weight: 125g 21. Package Size:12.5x9.3x6.5cm 22. Rated Voltage Current: 1.5v5ma 23. Four-speed Dpi Switching: 800-1600-2400-3600dpi 24. System Requirements: Windows 98me2000xpvistawin 25. 7win8win10 Or Latest. 26. Package Includes: 27. 1 X Mouse 28. 1 X Usb Receiver 29. 1 X English User Manual 30. Three-level Power Saving Mode: 31. Three Seconds Into The First Sleep Light Flashing Continuously 32. 1 Minute Or So To Enter The Secondary Sleep, Intermittent Flashing Lights 33. 8 Minutes Or So, Go To Level 3 Sleep, The Light Goes Out 34. How To Use: 35. Open The Battery Cover And Remove The Micro. 36. Receiver Installed On The Bottom Of The Mouse. 37. Plug The Receiver Into Your Computer Free Usb Port.