Great. Love theses. I've got a few of these and they all work great and has described.
Fantastic meter/tester with many options, blue tooth works fine, although you can't scale the graphs on the app ( but you can export the data to excel ) voltage and current closely agree with my professional DVM out of the box - and it is very easy to calibrate the tester of not. Arrived quickly, well packed with all accessories. Good product, good seller, highly recommended!