Review on Functional Multimeter Capacity Temperature Detector by Rud Starks

Great little gadget for an IT pro, very handy! I accidentally pressed a button too many times (or too little?) and changed the language, luckily I accidentally reset it back, but maybe add a button or make the language setting permanent? USB C connected to my portable battery and the mAh capacity stayed at 0 although I could be using it incorrectly? Also, the instructions aren't very clear, they're jumbled up and just don't make much sense, maybe rewriting the instructions will fix my problems, but it's a handy gadget nonetheless!