Mouse too small. After two days defective

The first installation went smoothly, my new Lenovo notebook with Windows 8, the mouse immediately recognized, downloaded the driver and installed. The mouse buttons and the wheel functioned very reliable, precise and quiet, without delay or stuttering. Only with the ergonomics, I had a problem (more on this at the end).

After two days and about 6 hours service (between the mouse is turned off via a switch on the bottom to save the batteries) suddenly stopped during operation of the cursor, and the buttons had no effect. The notebook showed that the mouse is offline. Several times off / on the mouse, reboot the PC and change the batteries did not help. I have uninstalled the mouse on the PC and can be re-identify what has worked, but it was immediately displayed as offline. The buttons showed no reaction. Other Bluetooth devices worked without problems, on the PC it was not so.

That's why I returned the mouse again.

Apart from the defect, I was so unhappy with the mouse, because it is simply too small. I have rather small (men's) hands and short fingers, but as usual put the heel of your hand on the mouse and relaxed press the buttons and rotate the wheel did not go. The fingers had to be bent, the hand cramped after a while. With a mouse in standard size, I had never the problem. For prolonged use (eg one hour Internet surfing click with links and scrolling) it was not suitable for me.