Simple Deluxe Submersible Aquari... vs hygger Small Aquarium Betta Heat...

This is higher wattage for a bigger tank. The main body is titanium because it seems they hold up the best. The displayed temperature is within 1 degree as verified by my calibrated thermometer.

The heater is just there for comfort. It works and doesn't feel cheesy though the controller could be designed better. The cable is thicker with hygger, so that's more comforting. The next day my fish is back to his happy food-loving self!

I am very surprised and disappointed.