Pros: No external dongle require for my BT equipped laptop.
Cons: Mouse is very small, in fact to small for my hand. Dispite the case where the mouse come with, the mouse is scratched (Very ironic). Bluetooth connection with my HP Win 8.1 Laptop, keen disconnecting at random. Reconnection is not very fast after Laptop awake. Mouse movement isn't fluid
Summary: The little power on off switch is next to the laser. I am always a little nervous that I am going to look into the laser when looking for the switch to turn it off. I also don't know how long the batteries will last but I am hoping for the best.
Pros: Small and ergonomic. Plenty of buttons that I won't use. Works great with the new HP Stream 7 tablet that has Windows 8.1 and Bluetooth.
Summary: I bought this mouse in February 2014. I had intermittent issues and replaced my Bluetooth dongle which helped. I was replacing batteries every 3 weeks until in August this mouse died. I returned the dead mouse to the factory which replaced it in 7 days. It's been 1 month now and the mouse is dead.
Pros: Comes in a Hard Case which is very handy or great for portable laptop situations .. Have one for some months with my one laptop and now ordered another for my other laptop.
Cons: Can not think of any at this point.. OH you need to make sure to order a Bluetooth Wireless Adapter for them.. I use one of the USB very small types that I leave in all the time even in the case or such..
Summary: From some reason it took quite a long time for the Bluetooth to pair with my new Surface Pro 3. This has me worried. Eventually, however, it paired and now is working beautifully. Small, light, and comfortable in my hand.