【Lag-free, Plug & Play】2.4GHz wireless technology provides automatic frequency recognition and stable signal, plug and play, connection range up to 33ft without any delays. Cut the cord and enjoy the freedom.⚠️【Note】Keyboard and mouse share a receiver, which is stored in the mouse. ⚠️TWO VERSION SHIPPED RANDOMLY⚠️Only the characters on the keyboard are slightly different, but the function is the same. | 【Less Noise, More Quiet】The mouse is 100% quiet without any clicking sound. The keyboard is not super quiet, but it is more than 90% quieter than other similar keyboards, so you can without worrying about disturbing others. | 【Power Saving Extends Battery Life】 Idle for 8 mins, the keyboard will sleep, idle for 1 min, the mouse will sleep, by pressing or clicking any keys to wake. Saving you the trouble of changing batteries frequently. Keyboard and mouse standby time up to 365 days, | 【Comfortable & Smooth Typing】The ergonomic tilt angle offers a better typing position to reduce the pressure on your wrist and increase comfort. Shorter keystroke distance and standard 104-key U.S. QWERTY layout make typing more responsive, smooth and soft. | 【Wide Compatibility】 This wireless keyboard mouse combo is compatible with all Windows system versions, Linux, Chrome OS, Mac OS. Works well with desktops, Chromebook, PC, laptop, computer, TV. | 【Warranty】Have a free two-year replacement warranty. If you encounter any problems during use, please contact us via Amazon email, we will provide a satisfactory solution.