Review on 📏 Black Composite Electronic Micrometer Millimeter Converter by Kenneth Murphy

I ordered 2 of these calipers and they are junk. One was dead on arrival. The display only gave out incomprehensible gibberish and wouldn't clear or turn off. They are advertised to make "breaks". You are not. Decided to return but Revain says return is not possible due to dangerous content! For real? Dangerous content? Of course I would like to know what the Revain advertisement says.