Note1 (water resistance rating)
RiDATA Q-77HR is water resistance to IPX7 (IEC standard 60529), which means it is rain-proof, splash-proof, and sweat-proof. It CANNOT withstand the force associated with water jet and swimming strokes.Remove RiDATA Q-77HR before you engage the following activities:
Showering or bathing: Pressurized or high velocity water jet may penetrate into the device. Thermal expansion/contraction would also be harmful to it.
Swimming: At least to IPX8 water resistance or you cannot swim with it.
Sauna or steam room: RiDATA Q-77HR operates at -10°C~ 50°C. High temperature and steam may cause damage the device.
Whenever you get your watch wet, dry it thoroughly before putting it back on.