Is Amazfit Nexo waterproof?

It is IP 68 certified which means resistant to dust, rain, splashing, and accidental submersion. It shouldn’t be used when you are taking a shower/bath, having a spa, swimming or in the sauna or steam room. 

Specifically, the IP rating is a number that indicates what level of protection it has against both solids and liquids.  

6-The first digit stands for its resistance to dust, but also general dirt and sand.  

8-The second digit provides certification for water resistance.