PCA have new review up on the BT510 Mouse and BT007Si bluetooth dongle from Bluetake, a branch of Thermaltake. Here is a snip from the review:

"Placing the BT510 next to a MX700 shows the relative size of this mouse. Underneath there is an on/off switch for transportation, the connect button and the 800 dpi optical sensor. It is on the small side and very light even with the batteries installed."



Link: PC Apex