PCApex posted a new review up on the BT510 Mouse and BT007Si bluetooth dongle from Bluetake, a branch of Thermaltake.
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.BlueTake BT510 Mouse and BT007Si Dongle Review