Anyone know where I can get the electronic viewfinder for the RX1 with stock? Thanks

Got my RX1 few months back and did not have any chance to try it out fully. Took a few shots with my kids but mostly OOF. I notice this camera has slower auto focus hence taking kid pictures is difficult, often OOF or miss the moment. But if manage to take the right moment and focus, the picture is very sharp and clear, not to mention the ISO up to 12800 is ok to use.

Bought a few accessories with the camera ready for my overseas trip.

Thanks.