The 'X' means the device was not officially tested for solid particles (dust), only for water resistance.
While resistant to deep water, IPX8 does not imply it can withstand high-pressure water jets or steam cleaning. IPX-85202:25:33 Min
A "25-33 min" note indicates testing that exceeds the standard 30-minute benchmark, ensuring durability for extended use, such as a long swim or unintentional drops into deep water. The 'X' means the device was not officially
It is safe for underwater use, such as swimming, diving, or snorkeling, provided the depth remains within the manufacturer’s specifications (usually >1 meter). ensuring durability for extended use