received a 2545-RC (no scrollwheel) am in negotiation with seller for partial refund.



otherwise looks new and am very impressed with the DPI. that 1600 is FAST! even 800 is more than twice what I'm used to in my trackballs. If only the bearings weren't terrible.



Ohwell. I'm still going to find better bearings on eBay or aliexpress or somewhere and install them.