I bought one about six months ago and I have mixed feelings about it. The good is the size and the novelty. The bad is the price (I paid 180.00 US) and the quirkyness. It would be more accuarate to call it a Laser Projected Sound Detected Bluetooth Keyboard. Because the ultrasound sensors are detecting your finger positions, a lot of errors arise when you first use the keyboard. After training yourself to keep your wrists directly over the keyboard and attacking from above does your typing get better (These are my results, your mileage my vary.)I also find it to be a bit uncomfortable after 10-15 minutes of use. Also the laser isn't strong enough to projest in sunlight or very bright light. It also doesn't like some surfaces. My kitchen table for one. I'm sorry if I am ranting a bit but IMHO an IGo or Stowaway protable Bluetooth keyboard is a much better investment