I have been using the Microsoft Wireless Keyboard Adapter for the Surface for two weeks. I consider this an essential accessory because: - Quick flawless response. - Same magnet design as keyboard reduces complication - Battery life is long. Still on the charge I had last year. - Fast charging. - No more hunching my back over. I can push the screen away from the keyboard and sit relaxed. - My knuckles are no longer right up against the screen. - Fits in any case, since it is a slender keyhole shape with no clumsy appendages or sticky-outies.