Lifegard Aquatics' LED Digital Thermometer is submersible and features a brightly lit display that you can read from a distance. It comes with a suction cup, and can be mounted wherever is most convenient. Testers reported that accuracy was good, and the unit is movable so reading can be taken throughout an aquarium, in a sump, or even outside to get an air temperature reading. The unit is versatile, and being able to locate the display anywhere is quite useful. In a market with a lot of options, this device has features aquarists will find attractive.