Smartwatches with IP66 protection

IP66 (wave impact)

— dust-resistant housing with protection against strong water jets/waves.

Dust resistance (level 6) protects the device from any exposure to dust — the maximum protection level.
Water protection level 6 implies resistance to strong water jets and sea waves. In fact, this allows even short-term (up to 1 s) immersion underwater to a depth of several centimetres without consequences. However it is impossible to swim in a pool with such a device, but taking a shower (including with strong pressure) and even water skiing is permitted.