Review on Wireless Numeric Keypad: TRELC Mini 2.4G 18 Keys Number Pad with Silent Financial Accounting Keypad, Portable Keyboard Extension + Wireless Mouse - Ideal for Laptop, PC, Desktop, and Notebook (White) by James Broome

Over the past few months I have purchased three of these mouse/10 button combos for various home/office setups. This was the cheapest of the three. I think it works well, but it seems less durable than other, more expensive ones. The mouse doesn't track as well on all surfaces as some of the more expensive models. What I actually needed was a glossy black plastic surface for the mouse to work. It didn't work on a piece of non-glossy black cardboard and it didn't work on my glossy wooden tabletop. Sometimes the mouse jumps to the corner of the screen. The more expensive ones don't. If you need to save $10, that's fine, but personally I'd rather pay another $10 for a better set.