Mouse for surface pro 3

[andrewohare]

So my surface pro 3 arrives tomorrow and as it's got limited ports I'm looking for a mouse that's Bluetooth without a dongle

Seen this on oc
http://www.overclockers.co.uk/showproduct.php?prodid=KB-055-GI&groupid=702&catid=23&subcat=1276

It doesn't state a dongle anybody else know or recommend a mouse for the surface

Don't need expensive mice as I already have a rat 7 and a wireless rat 9 in the house, it's just to use for work really

Thanks