1. Number of keyboard keys: 100 2. Number of mouse buttons: 4 3. Compatible with WindowsXP/Win7/Win8/Win10 system 4. Battery: 2xAAA keyboard battery (not included), 1xAA battery for mouse (not included) 5. 2.4G wireless technology, stable signal transmission within 10 meters, strong anti-interference ability 6. The 100-key compact design keyboard, with combination keys instead of rarely used function keys, not only saves space, but also makes your desk clean and tidy 7. Ergonomic design, the concave design of the keycap fits the fingertips better, and the mouse fits the palm of the hand, making it more comfortable to use 8. You can quickly switch the calculator, multimedia playback, volume adjustment and other functions through the combination of FN+F1~F12, which is convenient and worry-free 9. Plug and play, no driver required 10. Small and convenient, saving desktop space 11. Keyboard size: 39x13.5x3.6 cm 12. Mouse size: 9.9x7.1x3.8 cm 13. Keyboard weight: about 590g 14. Mouse weight: about 80g