Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not designed for human hands.

I am very disappointed in the design of the Kaito AN-03L radio antenna. Once unraveled it works great as an antenna, but then go to wind it back up again and the fun begins. It obviously wasn't designed for human hands and fingers. The finger indents on the unit are just to shallow to enable easy winding, it is like trying to wind up a cord using a flat disk. It has become so frustrating that I'm now reluctant to use the unit as I know if I pull the antenna wire out it will take ages to wind it back up again.Kaito needs to resign the unit to facilitate easier winding up.