still love mine , the company that made it did send me a warning email about wrapping the cords too tight that it could break the system . It is fiber optics ( glass) but for 50 dollars or so Its a steal and it has worked great so far . That said being able to look and not really understanding what I am seeing is a bit like not being a doctor and trying to self diagnose via the inter net and thinking you have some disease that only affects small pockets of native tribes in the jungles of Borneo , its easy to over think something . Finding a program to use it with was the hardest part for me and that only took 20 min to find one . The attachments it came with did not fit my phone so I had to use a lap top no biggie .