2.4GHz Wireless Connection - Utilizing advanced 2.4GHz wireless technology, which offers plug and play functionality without the need for additional drivers. It ensures stable signal transmission with a working range of up to 33ft. ( The USB Receiver is located in the keyboard's battery compartment. ) | Ergonomic Design - The integrated ergonomic tilt provides optimal comfort, effectively reducing strain. The great spring action and comfortable key sizes ensure swift responsiveness, enhancing your work efficiency. This makes it an ideal choice for professionals working with spreadsheets, accounting files, or financial applications. | Anti-Slip And Portable Design - The number keyboard features four non-slip mats on its back, ensuring stability and preventing any unwanted movement during usage. This durable number pad is conveniently portable, allowing you to work confidently and efficiently wherever you go. | Power Saving - It will automatically power off after 10 minutes of inactivity, effectively prolonging the battery life. The keypad can be awakened by pressing any key. | Noiseless Click Mouse - The portable design facilitates convenient storage in a bag during business travel, while the responsive buttons offer a gentle click with minimal noise, eliminating any disturbance caused by loud clicking sounds for others. | Universal Compatibility - TRELC Wireless Numeric Keypad and Mouse works with PC, laptop and desktop computers; Compatible with Windows 2000 / XP / Vista / 7 / 8 / 10 systems. The wireless 18-key numeric keypad is Not fully compatible with Mac OS.