Bluetooth allows for connection. When you need to use more than one computer for business (Mac and Windows), having this capability is a huge benefit. There is a learning curve involved due to the unusually large size of the keys, but after you've done that, everything will be fine. There is no option button on a Mac. Below are some advantages: compactness Compatible with both Mac and Windows, allowing seamless switching between up to three devices. Long life span for the battery Its cons: After a couple of months, the spacebar started to have an adverse reaction whenever it was pressed. Because of its small size, there are a lot of sacrifices on the hot keys. For example, the function buttons f1-f12 can only be touched by holding down the fn button. If you want to shut a window in Windows, you have to press alt + fn + f4, which is inconvenient to perform with one hand.