Surprisingly awesome mouse. I ordered this and a G3 Pro by the same manufacturer. Both are great mice. This one does not come with a charging dock but its really not needed. Its 55g by my measurement, which is super light. The buttons are easy to press with minimal pre-travel, very good for gaming and quick clicks. It came with grip tape which is also nice. Its not the best stuff I've used but it does help the grip.
The only knock on this mouse is that the finish is smooth, non-grippy plastic. The G3 pro from the same people has a nice semi-rubberized feel to it that really helps the grip feel even without adding the tape. On the X3, the tape is pretty necessary to get proper side grip.
Tracking is precise and smooth. Measured at 1000hz by default over the dongle.