Most important, this displays in 10ths of a pound. So a 20oz tank should come to 1.25lbs. The larger scale available displays in ounces (20 oz tank comes to 1lb 4oz), which is better to use for measuring.
Secondly, it has one button, which stopped functioning on mine after 3 months (and being used 15-20 times w/o dropping it). Not cool.
I just don't like it after having used the other scale that the same company makes (which is hangable, I should mention) and displays in ounces and has a backlit display, etc etc etc.
Too simplified, broke, wrong units 
