30s-si1000-a-10-18.pdf (1.6 MB)
Found this today.
By my calculation, it is an improvement in noise level over the MEMS used in RS4D by a factor of 430.
But they call it “high end” so I suppose it is expensive.
They have another (less expensive) model with 10x the noise spec - still an improvement of 43x I think (model VS1002).