Nothing's CMF watches aren't only one of the best cheap smartwatch options but also look rugged enough to survive the occasional splash of water. For the CMF Watch Pro 2, Nothing says the watch has an IP68 rating, which means it is dust-tight and resistant to limited freshwater exposure under controlled conditions. That same cautious approach extends to the newer CMF Watch 3 Pro as well. The CMF Watch 3 Pro should be fine for rain, sweat, and everyday splashes, but it is not meant to be treated like a dive watch. This means the CMF Watches have the highest possible ingress protection against solids and are fully dust-tight, and the second highest level of water protection, certifying them against continuous immersion under manufacturer-defined conditions.