Samsung has allegedly certified a novel device with the MIIT. In fact, there are 2 model numbers in evidence in the documentation in question (SM-R840 and R850). However, they are so similar that it is likely they are 2 variants of the same product, perhaps with different display sizes.
On that note, it is most likely this new leak refers to a smartwatch: the original Galaxy Watch's model number was SM-R8xx, after all. Therefore, it is now speculated that the putative wearable is also going to be part of this series.
Should this be the case, it may be expected to have state-of-the-art features such as advanced user-position sensing so as to be of help during work-outs, as well as blood oxygen (and perhaps even blood pressure) tracking.
However, the only definitive specs associated with the putative wearable are single-band Wi-Fi and Bluetooth connectivity thus far, with no hint of anything more advanced such as 4G/LTE support. This possible new Samsung watch may launch alongside the Galaxy Note 20 series later this year.