When it comes to waterproofing, IPX7 and IP67 are two of the most common ratings you'll see, the difference between these two ratings is as follow: IPX7 means it is only waterproof: the X means that it hasn't been tested for dust resistance, and the 7 means that it can withstand being submerged in up to 1 meter of water for 30 minutes. IP67 is slightly different, which means it is dustproof and waterproof: the 6 means that it is completely dustproof, and the 7 means that it can withstand being submerged in up to 1 meter of water for 30 minutes. If you're looking for a waterproof device, then either standard will be fine. However, if you need a waterproof device that can also withstand dust, then choose IPX67.